1911 to 1972

In 1956, Canada, the United States, and Mexico came to an agreement with the American Association of Motor Vehicle Administrators, the Automobile Manufacturers Association and the National Safety Council that standardized the size for licence plates for vehicles (except those for motorcycles) at 6 inches (15 cm) in height by 12 inches (30 cm) in width, with standardized mounting holes.^[6] The 1954 (dated 1955) issue was the first Ontario licence plate that complied with these standards.

Image	Dates issued	Design	Slogan	Serial format	Serials issued	Notes
	1911	White serial on blue porcelain plate; vertical "ONT." and "1911" at left and right respectively	none	12345	1 to approximately 11500
	1912	Black serial on white flat metal plate; provincial coat of arms and "ONT 1912" at left	none	12345	1 to approximately 16500
	1913	Black serial on yellow flat metal plate; provincial coat of arms and "ONT 1913" at left	none	12345	1 to approximately 24000
	1914	Black serial on tan flat metal plate; provincial coat of arms and "ONT 1914" at left	none	12345	1 to approximately 33000
	1915	Dark blue serial on light green flat metal plate; provincial coat of arms and "ONT 1915" at left	none	12345	1 to approximately 43000
	1916	Black serial on white flat metal plate; provincial coat of arms and "ONT 1916" at left	none	12345	1 to approximately 64000
	1917	Black serial on white flat metal plate; provincial coat of arms and "ONT 1917" at right	none	12345	1 to approximately 78000
	1918	Dark blue serial on white flat metal plate; provincial coat of arms and "ONT 1918" at left	none	123456	1 to approximately 107000
	1919	Black serial on golden yellow flat metal plate; provincial coat of arms and "ONT 1919" at left	none	123456	1 to approximately 133000
	1920	Dark green serial on white flat metal plate; provincial coat of arms and "ONT 1920" at left	none	123456	1 to approximately 162000
	1921	Embossed orange serial on black plate with border line; "ONT 21" at left	none	123-456	1 to approximately 184-000	First embossed plate.
	1922	Embossed black serial on white plate with border line; "ONT 22" at left	none	123-456	1 to approximately 216-000
	1923	Embossed white serial on black plate; "ONT–1923" at bottom	none	123-456	1 to approximately 260-000
	1924	Embossed black serial on golden yellow plate; "ONT–1924" at bottom	none	123-456	1 to approximately 313-000
	1925	Embossed yellow serial on black plate with border line; "ONT 25" at left	none	123-456	1 to approximately 309-000
	1926	Embossed black serial on grey plate with border line; "ONT 26" at left	none	123-456	1 to approximately 415-000
	1927	Embossed black serial on buff plate with border line; "ONTARIO 1927" at bottom	none	123·456	1 to approximately 437·000	First use of the full province name.
	1928	Embossed black serial on yellow plate with border line; "ONTARIO 1928" at bottom	none	123·456	1 to approximately 446·000
	1929	Embossed black serial on grey plate with border line; "ONTARIO 1929" at bottom	none	123·456	1 to approximately 477·000
	1930	Embossed black serial on white plate with border line; "ONTARIO 1930" at bottom	none	A-1234	A-1 to Z-9999	Letters G, I and Q not used in serials.[7]
				AB-123	AA-1 to approximately PV-999
	1931	Embossed black serial on yellow plate; "ONTARIO 1931" at top	none	A·1234	A·1 to Z·9999
				AB·123	AA·1 to approximately OT·999
	1932	Embossed black serial on grey plate; "ONTARIO 1932" at top	none	A·1234	A·1 to Z·9999
				AB·123	AA·1 to approximately OB·999
	1933	Embossed black serial on yellow plate; "ONTARIO 1933" at top	none	A·1234	A·1 to Z·9999
				AB·123	AA·1 to approximately MZ·999
	1934	Embossed black serial on white plate; "ONTARIO 1934" at top	none	A·1234	A·1 to Z·9999
				AB·123	AA·1 to approximately NA·999
	1935	Embossed black serial on orange plate; "19 ONTARIO 35" at top	none	A·1234	A·1 to Z·9999
				AB·123	AA·1 to approximately OK·999
	1936	Embossed white serial on black plate; "19 ONTARIO 36" at bottom	none	A·1234	A·1 to Z·9999
				AB·123	AA·1 to approximately PK·999
	1937	Embossed white serial on red plate; "ONTARIO 1937" centred at top, with crowns to left and right	none	1·A·234 12·A·34 123·A·4		First base to feature a crown in any form.
	1938	Embossed orange serial on light blue plate; "19", crown and "38" centred at top; "ONTARIO" centred at bottom	none	1A234 12A34 123A4		Colours commemorate the Loyal True Blue and Orange Home.[8]
	1939	Embossed white serial on black plate; "19", crown and "39" centred at top; "ONTARIO" centred at bottom	none	1A234 12A34 123A4 A1234
	1940	Embossed black serial on yellow plate; "ONTARIO", crown and "1940" at top	none	1A234 12A34 123A4 A1234
	1941	Embossed green serial on white plate; "ONTARIO", crown and "1941" at top	none	1A234 12A34 123A4 A1234
	1942	Embossed black serial on orange plate; "ONTARIO", crown and "1942" at top	none	1A234 12A34 123A4 A1234
	1943–44	Embossed orange serial on black plate; "ONTARIO", crown and "1943" at top	none	1A234 12A34 123A4 A1234		Revalidated for 1944 with windshield stickers, due to metal conservation for World War II.
	1945	Embossed white serial on blue plate; "ONTARIO", crown and "1945" at top	none	1A234 12A34 123A4 A1234
	1946	Embossed white serial on black plate; "ONTARIO", crown and "1946" at top	none	1A234 12A34 123A4 A1234
	1947	Embossed black serial on silver plate; "ONTARIO", crown and "1947" at top	none	1A234 12A34 123A4 A1234
	1948	Embossed white serial on blue plate; "ONTARIO", crown and "1948" at top	none	1A234 12A34 123A4 A1234
	1949	Embossed blue serial on white plate; "ONTARIO", crown and "1949" at top	none	1A234 12A34 123A4 A1234 1234A
	1950	Embossed white serial on black plate; "ONTARIO", crown and "1950" at top	none	1A234 12A34 123A4 A1234 1234A
	1951–52	Embossed blue serial on white plate; "19–ONTARIO–51" at top	none	1A234 12A34 123A4 A1234 1234A AB123		Revalidated for 1952 with windshield stickers.
	1953	Embossed white serial on blue plate; "ONTARIO", crown and "1953" at top	none	1A234 12A34 123A4 A1234 1234A AB123
	1954	Embossed blue serial on white plate; "ONTARIO", crown and "1954" at top	none	1A234 12A34 123A4 A1234 1234A AB123
	1955	As 1953 base, but with "1955" to right of crown	none	123·456 A12·345		First 6" x 12" plate.
	1956	As 1954 base, but with "1956" to right of crown	none	123·456 A·12345
	1957	Embossed white serial on black plate; "ONTARIO", crown and "1957" at top	none	123·456 A·12345
	1958	Embossed black serial on white plate; "ONTARIO", crown and "1958" at top	none	123·456 A·12345
	1959	As 1957 base, but with "1959" to right of crown	none	123·456 A·12345
	1960	As 1958 base, but with "1960" to right of crown	none	123·456 A·12345
	1961	As 1957 base, but with "1961" to right of crown	none	123·456 A·12345
	1962	As 1958 base, but with border line, and with "1962" to right of crown	none	123·456 A·12345
	1963	As 1957 base, but with border line, and with "1963" to right of crown	none	123·456 A·12345
	1964	As 1958 base, but with border line, and with "1964" to right of crown	none	123·456 A·12345
	1965	Embossed white serial on blue plate with border line; "ONTARIO", crown and "1965" at top	none	123·456 A·12345 12345·A
	1966	Embossed blue serial on white plate with border line; "ONTARIO", crown and "1966" at top	none	123·456 A·12345 12345·A
	1967	Embossed white serial with crown separator on blue plate with border line; "19 ONTARIO 67" at top	"18 CONFEDERATION 67" at bottom	123-456 A12-345 123-45A		Issued as part of the Canadian Centennial celebration.
	1968	Embossed blue serial with crown separator on white plate with border line; "1968" and "ONTARIO" centred at top and bottom respectively	none	123-456 A12-345 123-45A
	1969	Embossed white serial with crown separator on blue plate with border line; "1969" and "ONTARIO" centred at top and bottom respectively	none	123-456 A12-345 123-45A
	1970	As 1968 base, but with "1970" at top	none	123-456 A12-345 123-45A
	1971	As 1969 base, but with "1971" at top	none	123-456 A12-345 123-45A
	1972	As 1968 base, but with "1972" at top	none	123-456 A12-345 123-45A

1973 to present

After 1973, Ontario ceased to issue plates annually. Instead, validation was indicated by means of stickers affixed to the top right of the rear plate. All Ontario license plates issued since 1973 remain valid for display.

In 1973, the "Keep it Beautiful" slogan was introduced to Ontario passenger plates. In 1982, the slogan was changed to "Yours to Discover". The adjustment was made to reflect the province's new tourism campaign.^[9]

In April 2019, the Government of Ontario announced that the plates would be redesigned. The plates' design includes a superficial laminate layer manufactured by 3M.^[10] The plates have a two-tone blue background with white letters and numbers flanking a stylized white trillium, and no longer embossed. The motto was also changed to "A Place to Grow", taking inspiration from Ontario's unofficial anthem "A Place to Stand, a Place to Grow".^[11]

Issue of the new plates began in February 2020. The new plates faced criticism from law enforcement agencies, as their new design made them difficult to read in certain lighting conditions. Concerns were also raised that photo radar systems would have difficulty reading them, due to the lighting issues, as well as the smaller sizing of their "Ontario" text. On February 20, 2020, Premier Doug Ford stated that the government planned to recall the initial batch, and was working with 3M on improvements.^[12] However, on May 6, 2020, a spokesperson for Ford announced that the blue plates would be discontinued entirely after "thorough testing by law enforcement and other key stakeholders". The previous white plates were reinstated, with their coating also made more durable, although the blue plates continued to be issued through early-June until their supply was exhausted.^[13][14]

Image	Dates issued	Design	Slogan	Serial format	Serials issued	Notes
	1973–78	Embossed blue serial with crown separator on white plate with border line; "ONTARIO" centred at top; "73" at bottom left and full sticker box at bottom right	"KEEP IT BEAUTIFUL" centred at bottom	ABC-123	AAA-001 to NKJ-999	Letters G, I and Q not used in this serial format, and U discontinued after the LMU series (1976).[7]
	1978–82	As above, but without "73", and with partial sticker box at bottom right			NKK-001 to TMA-999
	1982–86	As above, but with no sticker box	"YOURS TO DISCOVER" centred at bottom		TMB-001 to ZZZ-999	Staggered registration introduced 1983, with each plate expiring in the same month as the registrant's birthday.
	1986–94			123-ABC	001-AAA to 999-VYH	Letters G, I, Q and U not used in this serial format.[7]
	1994–97	Blue on reflective white with screened crown separator; "ONTARIO" screened in blue centred at top	"YOURS TO DISCOVER" screened in blue centred at bottom	123-ABC	001-VYJ to 999-ZZZ	Narrower serial dies introduced in preparation for ABCD-123 format, and O discontinued after the ZZO series (1997).
	1997–2020 2020–present			ABCD-123	AAAA-001 to CLZZ-999; CPAA-001 to DBBP-175 (as of December 20, 2023)[15]	Letters G, I, O, Q and U not used in this serial format.[7] Font had slightly changed from CASA-001 to CATR-999.[16]
	2008–20 2020–present		"TANT À DÉCOUVRIR" screened in blue centred at bottom		FAAA-001 to FAAY 026 (as of April 14, 2023)[17]	Alternative issue, introduced in 2008. Certain series were allocated for the french slogan; BCAA, BEAA, BEAD, BEAE, BEAJ, BEAL, BEAM, BEAN, BEAP, BEAS, BSRH, BSRJ, BSRK, BTBE, and BTBF. Exclusive use of 'F' series of serials since April 2019.
	2020	White on reflective, two-hue blue with white stylized trillium separator and white crown placed bottom right; "Ontario" screened in white centred at top.[18][19] Plates are made of synthetic material and are not embossed.	"A PLACE TO GROW" screened in white centred at bottom.	ABCD-123	CMAA-001 to CMMZ-349 (as of July 09, 2020)[17]	The initial batch of these plates issued from February 1, 2020 to March 4, 2020 were recalled due to poor visibility at night when illuminated.[12] This design was later scrapped on May 6, 2020.[20]
			"EN PLEIN ESSOR" screened in white centred at bottom[21]		FAAE-000 to FAAM-000	Alternative issue.

Serial numbers reserved for government officials

Green vehicle plates

Image	First issued	Description	Slogan	Serial format	Serials issued	Notes
	2010	Green on white with graphic white trillium separator	"GREEN VEHICLE"	GVAB 123	GVAA-001 to GVKC-815 (as of June 10, 2023)[17]	Issued to electric vehicles (plug-in hybrid and battery electric) and hydrogen vehicles. Vehicles with these plates can access HOV lanes on 400-series highways regardless of the number of passengers in the vehicle.[23] See also: government incentives for plug-in electric vehicles.
			"VÉHICULE ÉCOLOGIQUE"	VEAB 123	VEAA-001 to VEAB-658 (as of May 24, 2022)[17]

Historic vehicles

Example of an Ontario Historic plate, affixed to the front of a vehicle.

Historic vehicle license plates were introduced in 1969 as yearly plates. In 1973, plates switched to permanently issued plates validated with stickers.

Vehicles more than 30 years old and substantially unchanged since manufacture may qualify for a "Historic" registration.^[24]

Annual fees were much lower ($18 vs $120 for a passenger car until 2022),^[25] but historic vehicles may not be used as conventional transportation. They legally may only be driven to and from events and parades where the vehicle is on display, to garages for maintenance, and other similar use cases. Annual renewal stickers are affixed to the rear plate, as with passenger vehicles.

Historic plates are not to be confused with year-of-manufacture plates.^[26]

Image	First issued	Description	Slogan	Serial format	Serials issued	Notes
	1969	White on blue plate; year centred at top, "ONTARIO" centred at bottom. "HISTORIC" "VEHICLE" screened vertically on left and right sides in red tags.	none	12 345
	1970	Blue on white plate; year centred at top, "ONTARIO" centred at bottom. "HISTORIC" "VEHICLE" screened vertically on left and right sides in red tags.	none
	1971	White on blue plate; year centred at top, "ONTARIO" centred at bottom. "HISTORIC" "VEHICLE" screened vertically on left and right sides in red tags.	none
	1972	Blue on white plate; year centred at top, "ONTARIO" centred at bottom. "HISTORIC" "VEHICLE" screened vertically on left and right sides in red tags.	none
	1973	Embossed blue serial with crown separator on white plate with border line; "ONTARIO" centred at top; "73" at bottom left and full sticker box at bottom right	"HISTORIC VEHICLE"	HVA-123
	1978	As above, but without "73", and with partial sticker box at bottom right
	1982	As above, but with no sticker box
	1994	Blue on reflective white with screened crown separator; "ONTARIO" screened in blue centred at top. "HISTORIC" screened vertically on left side.	"YOURS TO DISCOVER"
		Blue on reflective white with screened crown separator; "ONTARIO" screened in blue centred at top. "HISTORIC" screened vertically on left side.		123-HVA	001-HVA to 999-HVZ
	2007	Blue on reflective white with screened crown separator; "ONTARIO" screened in blue centred at top. "HISTORIC" screened vertically on left side.		1H2345	1H0001 to 7H9039 (as of June 02, 2023)[17]

1916 to 1962

Commercial license plates were first introduced in 1916.

Image	First issued	Description	Serial format	Serials issued	Notes
	1916	Black serial on white flat metal plate; provincial coat of arms and "ONT 1916" at left	C1234
	1917	Black serial on white flat metal plate; provincial coat of arms and "ONT 1917" at right	C1234
	1918	Dark blue serial on white flat metal plate; provincial coat of arms and "ONT 1918" at left	C1234
	1919	Black serial on golden yellow flat metal plate; provincial coat of arms and "ONT 1919" at left	C1234
	1920	Dark green serial on white flat metal plate; provincial coat of arms and "ONT 1920" at left	C12345
	1921	Embossed orange serial on black plate with border line; "ONT 21" at left	C1-234
	1922	Embossed black serial on white plate with border line; "ONT 22" at left	C1-234
	1923	Embossed white serial on black plate; "ONT–1923" at bottom	C12-345
	1924	Embossed black serial on golden yellow plate; "ONT–1924" at bottom	C12-345
	1925	Embossed yellow serial on black plate with border line; "ONT 25" at left	C12-345
	1926	Embossed black serial on grey plate with border line; "ONT 26" at left	C12-345
	1927	Embossed black serial on buff plate with border line; "ONTARIO 1927" at bottom	C12-345
	1928	Embossed black serial on yellow plate with border line; "ONTARIO 1928" at bottom	C12-345
	1929	Embossed black serial on grey plate with border line; "ONTARIO 1929" at bottom	C1-234
	1930	Embossed black serial on white plate with border line; "ONTARIO 1930" at bottom	12-345C		Letter C moved to the end
	1931	Embossed black serial on yellow plate; "ONTARIO 1931" at top	12-345C
	1932	Embossed black serial on grey plate; "ONTARIO 1932" at top	12-345C
	1933	Embossed black serial on yellow plate; "ONTARIO 1933" at top	12345-C
	1934	Embossed black serial on white plate; "ONTARIO 1934" at top	12345-C C-12345
	1935	Embossed black serial on orange plate; "19 ONTARIO 35" at top	12345-C
	1936	Embossed white serial on black plate; "19 ONTARIO 36" at top	12345-C
	1937	Embossed white serial on red plate; "ONTARIO 1937" centred at top, with crowns to left and right	12345-C
	1938	Embossed orange serial on light blue plate; "19", crown and "38" centred at top; "ONTARIO" centred at bottom	12345C
	1939	Embossed white serial on black plate; "19", crown and "39" centred at top; "ONTARIO" centred at bottom	12345C
	1940	Embossed black serial on yellow plate; "ONTARIO", crown and "1940" at top	12345C
	1941	Embossed green serial on white plate; "ONTARIO", crown and "1941" at top	12345C
	1942	Embossed black serial on orange plate; "ONTARIO", crown and "1942" at top	12345C
	1943-44	Embossed orange serial on black plate; "ONTARIO", crown and "1943" at top	12345C C12345		Revalidated for 1944 with windshield stickers, due to metal conservation for World War II.
	1945	Embossed white serial on black plate; "ONTARIO", crown and "1946" at top	1234C C1234
	1946	Embossed white serial on blue plate; "ONTARIO", crown and "1945" at top	12345C C12345
	1947	Embossed black serial on silver plate; "ONTARIO", crown and "1947" at top	12345C C12345
	1948	Embossed white serial on blue plate; "ONTARIO", crown and "1948" at top	12345C C12345
	1949	Embossed blue serial on white plate; "ONTARIO", crown and "1949" at top	12345C C12345
	1950	Embossed white serial on black plate; "ONTARIO", crown and "1950" at top	12345C C12345 12345B
	1951-52	Embossed blue serial on white plate; "19–ONTARIO–51" at top	12345C C12345 12345B		Revalidated for 1952 with windshield stickers.
	1953	Embossed white serial on blue plate; "ONTARIO", crown and "1953" at top	12345C C12345 12345B
	1954	As 1953 base, but with "1955" to right of crown	12345C C12345 12345B
	1955	Embossed blue serial on white plate; "ONTARIO", crown and "1954" at top	12-345A 12-345B 12-345C 12-345D
	1956	Embossed white serial on blue plate; "ONTARIO", crown and "1955" at top	12345-A 12345-B 12345-C 12345-D
	1957	Embossed white serial on black plate; "ONTARIO", crown and "1957" at top	12345-A 12345-B 12345-C 12345-D
	1958	Embossed black serial on white plate; "ONTARIO", crown and "1958" at top	12345-A 12345-B 12345-C 12345-D
	1959	Embossed white serial on black plate; "ONTARIO", crown and "1959" at top	12345-A 12345-B 12345-C 12345-D
	1960	Embossed black serial on white plate; "ONTARIO", crown and "1960" at top	12345-A 12345-B 12345-C 12345-D
	1961	Embossed white serial on black plate; "ONTARIO", crown and "1961" at top	12345-A 12345-B 12345-C 12345-D
	1962	Embossed black serial on white plate; "ONTARIO", crown and "1962" at top	12345-A 12345-B 12345-C 12345-D

1963 to 1979

In 1963, Ontario switched to a quarterly system for commercial plates. Plates could be issued on a quarterly basis rather than paying for a full year of registration.

• 
  This 1963 Ontario commercial license plate was the first quarterly plate. It expired in March 1964 and until dated March quarterly plates appeared in March 1967 this plate when issued in December 1963 was used as a quarterly commercial plate.
• 
  In 1965 all June, September and December quarterly plates were issued in the reverse colors as in 1963 and 1964. In alternate years Ontario quarterly plates reversed their colors each year.
• 
  First issue of commercial quarterly plates dated for March.
• 
  Each plate would be valid for three months or a quarter of the year. This plate was issued in June 1969 and expired in September 1969.
• 
  Quarterly plates had several serial format arrangements. Beginning in March 1968 they switched to the
  A1-234, 123-4A and A12-345 & 123-45A formats.
• 
• 
• 
• 
  Final quarterly plate issued. Ontario switched to plates renewed with stickers in 1980.

1980 to present

In the 1980s, Ontario shifted to plates that were renewed yearly with stickers, ditching the quarterly system.

Image	Dates issued	Description	Slogan	Serial format	Serials issued	Notes
	1980–1995	Black on white with embossed crown separator	none	AB1-234	AA1-001 to ZD9-999	Also used for non-passenger personal vehicles (i.e. pick-up trucks and panel vans).
	1995–1996	Black on reflective white with screened crown separator	"YOURS TO DISCOVER"	AB1-234	ZE1-001 to ZZ9-999	On commercial vehicles, licence plate stickers are affixed in the top right of the front plate, as shown in the photo. The top left corner may be used for other stickers relating to vehicle use or taxation (i.e.: government exemption).
	1996–2011			123-4AB	100-1AA to 999-9ZZ
	2011–present			AB-12345	AA-10001 to BW-89501 (as of November 10, 2023)[17]
			"TANT À DÉCOUVRIR"		DA-10001 to DA-17008 (as of June 12, 2023)[17]
	2020	White on reflective, two-hue blue with white stylized trillium separator and white crown placed bottom right	"OPEN FOR BUSINESS"	BF-10000		Never released to public due to visibility issues, scrapped.
	2020		"OUVERT AUX AFFAIRES"	DB-10000

Prorate plates

Used on vehicles registered in the International Registration Plan (IRP).

Image	Dates issued	Description	Slogan	Serial format	Serials issued	Notes
	1982–1994	Black on white with embossed crown separator	none	PA1-234	PA1-001 to PJ7-999
	1994–2006	Black on reflective white with screened crown separator; vertical "PRP" at left	"YOURS TO DISCOVER"	PA1-234	PJ8-001 to PZ9-999	Switched to new reflective plates.
	2006–2019	Black on reflective white with screened crown separator; vertical "PRP" at left		123-4PA	100-1PA to 999-9PZ
	2019–present	Black on reflective white; vertical "PRP" at left		PA12345	PA10001 to PA80483 (as of May 31, 2023)[17]

Bus plates

Bus license plates were first issued in 1973. They followed the quarterly system until 1980, switching in favour of a new permanent plate renewed yearly with stickers.^[28]

Image	Dates issued	Description	Slogan	Serial format	Serials issued	Notes	Usage
	1980–1994	Black reflective on white; "ONTARIO" screened in black at bottom.		BA1-234		The plate's color is changed to black for this design.	All bus types
	1994–2009	Black reflective on white; "ONTARIO" screened in black on top.	"YOURS TO DISCOVER"	BA1-234	BA1-001 to BN9-999		Plates designated for use on municipal and long distance busses. Letters G, I, O, Q and U not used in this serial format.
	2009–present	Black on reflective white with screened crown separator	"YOURS TO DISCOVER"	123-4BA	101-1BF to 522-3BM (as of January 8, 2023)[17]		Plates designated for use on municipal and long distance busses. Letters G, I, O, Q and U not used in this serial format.
	1980–1994	Black on white with embossed crown separator	none	BP1 234	BP1 001 to BP1 ???		Plates designated for use on inter-provincial and long distance coach busses.
	1994–present	Black on reflective white with screened crown separator	"YOURS TO DISCOVER"	BP1 234	BP2 ??? to BP4 875 (as of May 9, 2023)[17]		Plates designated for use on inter-provincial and long distance coach busses. Letters G, I, O, Q and U not used in this serial format.

School Bus plates

School Bus license plates were first issued in 1975 under a yearly registration. Unlike regular bus license plates, these plates expired in June at the end of the school year. In 1980, these yearly issued plates were phased out for permanent plates revalidated with stickers annually.^[28]

Image	Dates issued	Description	Slogan	Serial format	Serials issued	Notes
	1980–1994	Black on white; "ONTARIO" on bottom	none	SA1-234		Plates no longer issued yearly. Letters A, B, C, D, E, F, H, J, K, L, M, N, P, R, S, T, V, W, X, Y and Z are now used in this serial format. However, letters G, I, O, Q and U are not used in this serial format.
	1994–present	Black relfective on white; "ONTARIO" screened in black on top	"YOURS TO DISCOVER" in black screen in bottom	SA1-234	SA1-001 to SJ4-813 (as of April 16, 2023)[17]	Letters G, I, O, Q and U are not used in this serial format. Switched to reflective plate

Farm plates

Example of a Farm quarterly plate from 1979.

Farm plates were introduced in 1978 using the quarterly system. In 1980, the plates were switched to permanent plates revalidated with stickers.^[28]

Vehicles over 3000 kg owned by farmers and used for farm-related purposes, such as working the soil, building maintenance, and the transportation of farm products, may qualify for a farm plate. Farm-plated trucks and towed trailers may also be used by a farmer for personal transportation.

To qualify, a farmer must meet a series of criteria, including membership in farming organisations and a minimum amount of income that derives from farming. Fees for farm plates are substantially lower than for passenger or commercial plates. The Highway Traffic Act also exempts farm vehicles from several requirements imposed on commercial vehicles.^[29]

Farm plates are black on white with a black crown separator, in a pattern similar to commercial plates. They have the word "FARM" written vertically on the left of the plate. Validation stickers are the same as for other vehicles, and are affixed to the front plate, as with commercial plates.

Image	First issued	Description	Slogan	Serial format	Serials issued	Notes
	1980	Black on white; "ONTARIO" on bottom. "FARM" screened vertically on right side.	none	FA1234		Switched to permanent baseplates, renewed annually with validation stickers.
	1982	Black on white; "ONTARIO" on bottom. "FARM" screened vertically on left side.	none	FA1234		"FARM" moved to left side.
	1994	Black relfective on white; "ONTARIO" screened in black on top	"YOURS TO DISCOVER" in black screen in bottom	FA1-234		Introduction of reflective plates.
	2003	Black relfective on white; "ONTARIO" screened in black on top	"YOURS TO DISCOVER" in black screen in bottom	123-4FA	100-1FA to 884-4FX (as of June 7, 2023)[17]

1921 to 1973

Trailer plates were first introduced in 1921. Plates issued from 1921 to 1929 had the letter T at the front. In 1930, the letter T was moved to the end of the number. A quarterly system was introduced for trailers starting in 1963. ^[28]

Image	Dates issued	Description	Slogan	Serial format	Serials issued	Notes
	1934	Embossed black serial ; "ONTARIO" at top with year	none	12345·T		Trailer text vertically on left side
	1935	Embossed black serial ; "ONTARIO" at top with year	none	12345·T		Trailer text vertically on left side
	1936	Embossed dark yellow serial ; "ONTARIO" at bottom with year	none	12345·T		Trailer text vertically on left side
	1937	Embossed white serial ; "ONTARIO" at top with year	none	12345·T		Trailer text vertically on left side
	1943	Embossed dark yellow serial ; "ONTARIO" at bottom with year	none	12345·T
	1944	Embossed black serial on yellow plate ; "ONTARIO" at top left with crown centered and year at the top right.	none	12345·T
	1947	Embossed black serial on white plate ; "ONTARIO" at top left with crown centered and year at the top right.	none	12345·T
	1952	Embossed black serial on yellow plate ; "ONTARIO" at top left with crown centered and year at the top right.	none	12345·T
	1953	Embossed white serial on blue plate ; "ONTARIO" at top left with crown centered and year at the top right.	none	12345·T
	1955	Embossed white serial on blue plate ; "ONTARIO" at top left with crown centered and year at the top right.	none	12·345T
	1956	Embossed blue serial on white plate ; "ONTARIO" at top left with crown centered and year at the top right.	none	12345·T
	1959	Embossed white serial on black plate ; "ONTARIO" at top left with crown centered and year at the top right.	none	T·12345
	1962	Embossed black serial on white plate ; "ONTARIO" at top left with crown centered and year at the top right.	none	12345·T

1973 to present

By 1973, the quarterly system was phased out in favour of a semi-permanent plate validated each year with an annual sticker. As of 1980, trailer plates no longer require yearly validation stickers, rather a one time fee. ^[28]

Image	First issued	Description	Slogan	Serial format	Serials issued	Notes
	1973⁠–79	Embossed blue serial with crown separator on white plate with border line; "ONTARIO" centred at top; "73" at bottom left and full sticker box at bottom right	"KEEP IT BEAUTIFUL"	123-45A	10-01Z to 397-61N	Serials issued in reverse
	1979–80	As above, but without "73", and with partial sticker box at bottom right		123-45A	700-97N - 586-49L	Letter M not used.[31]
	1980⁠–84	Embossed blue serial with crown separator on white reflective plate with border line; "ONTARIO" centred at top and "TRAILER" at bottom.	"TRAILER"	123-45A	10-01A - 412-51K	First issue of permanent trailer plates. Reflective plates from Quebec.
	1984⁠–86	Embossed blue serial with crown separator on white reflective plate with border line; "ONTARIO" centred at top and "TRAILER" at bottom.		123-45A	604-92K - 999-99M	Introduction of reflective plates from ALCAN. Letter L not used.[31]
	1986	Embossed blue serial with crown separator on white reflective plate with border line; "ONTARIO" centred at top and "TRAILER" at bottom.		123-45A	A10-001 - A16-827
	1986⁠–94	Embossed blue serial with crown separator on white plate with border line; "ONTARIO" centred at top and "TRAILER" at bottom.		A12-345	A68-592 - M98-192	Switched back to painted plates due to issues with ALCAN reflective plates.
	1994⁠–2002	Blue on reflective white; "ONTARIO" screened in blue centred at top and vertical trailer text on the left side.	"YOURS TO DISCOVER"	A12-345	N40-861 to Z99-999	Trailer text moved back to the left side vertically.
	2002⁠–present	Blue on reflective white; "ONTARIO" screened in blue centred at top and vertical trailer text on the left side.		A12-34B	A10-01A to X71-41Y (as of April 22, 2023)[17]

1911 to 1980

Image	First issued	Description	Slogan	Serial format	Serials issued	Notes
	1965	White on blue; "ONT" screened in white on top with year to the right.	none	123 1234 12345
	1966	Blue on white; "ONT" screened in blue on top with year to the right.	none	A123 123A
	1968	Blue on white; "ONT" screened in blue on top with year to the right.	none	12345
	1972	Blue on white; "ONT" screened in blue on top with year to the right.	none	12345
	1973	White on blue; "ONT" screened in blue on top with year to the right.	none	12345
	1974	Blue on white; "ONT" screened in blue on top with year to the right.	none	12345
	1975	White on blue; "ONT" screened in blue on top with year to the right.	none	12345
	1976	Blue on white; "ONT" screened in blue on top with year to the right.	none	12345
	1977	White on blue; "ONT" screened in blue on top with year to the right.	none	12345
	1978	Blue on white; "ONT" screened in blue on top with year to the right.	none	12345
	1979	White on blue; "ONT" screened in blue on top with year to the right.	none	12345
	1980	Blue on white; "ONT" screened in blue on top with year to the right.	none	12345		Plates issued in 1980 were re-used in 1981 with a validation sticker.

1980 to present

Image	First issued	Description	Slogan	Serial format	Serials issued	Notes
	1980	Blue on white; "ONT" screened in blue on top.	none	12345 A1234	10001 to 99999 Z1001 to Z9999	Validation stickers were used on 1980 plates for 1981, year was removed by 1982.
	1981–⁠82	Blue on white; "ONT" screened in blue on top	none	A1234	Y0001 to S9999	Serials issued in reverse
	1982–⁠91	Blue on white; "ONT" screened in blue on top	none	A1234 123AB	R0001 to H9999 001AA to 999EZ 001NA to 999ZZ
	1991–⁠94	Blue on white; "ONT" screened in blue on top	none	AB123	FA001 TO KZ999
	1994–⁠96	Blue on reflective white; "ONT" screened in blue on top	none	AB123	LA001 to LZ999	Switched to new reflective plate design
	1996–⁠2003	Blue on reflective white; "ONT" screened in blue on top	none	1A234	1A001 - 9Z999
	2003–⁠08	Blue on reflective white; "ONT" screened in blue on top	none	123A4	100A1 to 999Z9
	2008–⁠13	Blue on reflective white; "ONT" screened in blue on top	none	1234A	0001A to 9999Z
	2013–⁠present	Blue on reflective white; "ONT" screened in blue on top	none	1A2B3	0A0A1 to 4X0D6 (as of May 25, 2023)[17]	Used occasionally; "ONT" stands for Ontario.

Off-road vehicle plates

These license plates are issued to ATVs and other vehicles for off roading uses.

Image	First issued	Description	Slogan	Serial format	Serials issued	Notes
	1984	Green on reflective white; "ONT" screened in green on top	none	123AB	001AA to 999ZZ	Used occasionally; "ONT" stands for Ontario.
		Green on reflective white; "ONT" screened in green on top	none	AB123	AA001 to P????	Used occasionally; "ONT" stands for Ontario.
	1994				P???? to ZZ999	Used occasionally; "ONT" stands for Ontario.
	2002	Green on reflective white; "ONT" screened in green on top	none	12AB3	11AA1 to 99ZZ9	Used occasionally; "ONT" stands for Ontario.
	2013	Green on reflective white; "ONT" screened in green on top	none	1AB23	1AA11 to 6ZT21 (as of May 20, 2023)[17]	Used occasionally; "ONT" stands for Ontario.

Moped plates

Image	First issued	Description	Slogan	Serial format	Serials issued	Notes
	1976	White on reflective red; "ONT 1976" screened in white on top	none	A1234
	1977	Red on reflective white; "ONT 1977" screened in red on top	none	A1234
	1978	White on reflective red; "ONT 1978" screened in white on top	none	A1234
	1979	Red on reflective white; "ONT 1979" screened in red on top and "MOPED" at bottom	none	A1234
	1980	Red on reflective white; "ONT 1980" screened in red on top and "MOPED" at bottom	none	A1234
	1981	Red on reflective white; "ONT" screened in red on top and "MOPED" at bottom	none	A1234		Year removed, sticker box added.
	1982	Red on reflective white; "ONT" screened in red on top and "MOPED" at bottom	none	A1234		Sticker box removed.
	1994	Red on reflective white; "ONT" screened in red on top and "MOPED" at bottom	none	A1234		New reflective plate. Used occasionally; "ONT" stands for Ontario.
	2004	Red on reflective white; "ONT" screened in red on top and "MOPED" at bottom	none	AB123	EA001 to EE211 (as of February 23, 2020)[17]	New serial format. Used occasionally; "ONT" stands for Ontario.

Snowmobile plates

Unlike all Ontario license plates — which were changed to reflective plates in 1994 — the snowmobile plates remain non-reflective.

Image	Dates issued	Description	Slogan	Serial format	Serials issued	Notes
	1970	Green on white; "ONT" screened on top	none	AB123
	1972	As above, but yellow on blue	none	AB123
	1973	Green on white; "ONT" screened on top	none	AB123
	1974	As 1970, 1973 and 1975, but inverted to white on green	none	AB123
	1975	Green on white; "ONT" screened on top	none	AB123
	1999	Blue on white; "ONTARIO" in the Helvetica Bold font screened on top	none	123456

1927 to 1972

Image	First issued	Design	Slogan	Serial format	Serials issued	Notes
	1927	Black serial on yellow plate; "ONTARIO." and "1927" at bottom	none	X1-234
	1928	Black serial on yellow plate; "ONTARIO." and "1928" at bottom	none	X1-234
	1929	Black serial on white plate; "ONTARIO." and "1929" at bottom	none	X12-345
	1930	Black serial on white plate; "ONTARIO." and "1930" at bottom	none	1234-X
	1931	Black serial on yellow plate; "ONTARIO." and "1931" at top	none	1234-X
	1932	Black serial on white plate; "ONTARIO." and "1932" at top	none	1-234-X
	1933	Black serial on yellow plate; "ONTARIO." and "1933" at top	none	1234-X
	1934	Black serial on white plate; "ONTARIO." and "1934" at top	none	X-1234 1234-X
	1935	Black serial on orange plate; "19 ONTARIO 35" at top	none	1234-X
	1936	White serial on black plate; "19 ONTARIO 36" at bottom	none	1234-X
	1937	White serial on red plate; "ONTARIO." and "1937" at top	none	1234-X
	1938	Red serial on blue plate; "ONTARIO." at bottom and "1938" at top	none	123X
	1939	White serial on black plate; "ONTARIO." at bottom and "1939" at top	none	1234X
	1940	Black serial on yellow plate; "ONTARIO." and "1940" at top	none	1234X
	1941	Green serial on white plate; "ONTARIO." and "1941" at top	none	1234X
	1942	Black serial on yellow plate; "ONTARIO." and "1942" at top	none	1234X
	1945	White serial on blue plate; "ONTARIO." and "1945" at top	none	1234X
	1946	White serial on black plate; "ONTARIO." and "1946" at top	none	1234X
	1947	Black serial on yellow plate; "ONTARIO." and "1947" at top	none	1234X
	1948	White serial on blue plate; "ONTARIO." and "1948" at top	none	123X
	1951	Blue serial on white plate; "19-ONTARIO-51." at top	none	1234X
	1953	White serial on blue plate; "ONTARIO." and "1953" at top	none	12X
	1954	Blue serial on white plate; "ONTARIO." and "1954" at top	none	X1234 1234X
	1955	White serial on blue plate; "ONTARIO." and "1955" at top	none	X123-4 1-234X
	1956	Blue serial on white plate; "ONTARIO." and "1956" at top	none	X-12345 12345-X
	1957	White serial on black plate; "ONTARIO." and "1957" at top	none	X-12345 12345-X
	1958	Black serial on white plate; "ONTARIO." and "1958" at top	none	X-12345 12345-X
	1959	White serial on black plate; "ONTARIO." and "1959" at top	none	X-12345 12345-X
	1960	Black serial on white plate; "ONTARIO." and "1960" at top	none	X-12345 12345-X
	1961	White serial on black plate; "ONTARIO." and "1961" at top	none	X-12345 12345-X
	1962	Black serial on white plate; "ONTARIO." and "1962" at top	none	X-12345 12345-X
	1963	White serial on black plate; "ONTARIO." and "1963" at top	none	X-12345 12345-X
	1964	Black serial on white plate; "ONTARIO." and "1964" at top	none	X-12345 12345-X
	1965	White serial on blue plate; "ONTARIO." and "1965" at top	none	X-12345 12345-X
	1966	Blue serial on white plate; "ONTARIO." and "1966" at top	none	X-12345 12345-X
	1967	White serial on blue plate; "19 ONTARIO 67." at top and "18 CONFEDERATION 67" at bottom	none	X12-345 123-45X
	1968	Blue serial on white plate; "ONTARIO." at bottom and "1968" at top	none	X12-345 123-45X
	1969	White serial on blue plate; "ONTARIO." at bottom and "1969" at top	none	X12-345 123-45X
	1970	Blue serial on white plate; "ONTARIO." at bottom and "1970" at top	none	X12-345 123-45X
	1971	White serial on blue plate; "ONTARIO." at bottom and "1971" at top	none	X12-345 123-45X
	1972	Blue serial on white plate; "ONTARIO." at bottom and "1972" at top	none	X1-234 12-34X

Motorcycle Dealer plates

An example of a current Motorcycle Dealer plate.

Dealer plates for motorcycles have been issued since the 1920s.^[28] Very few of these early plates were issued, thus making it a rare plate. The 'M' prefix was featured on all plates before 1973. From 1973 to 1979 they were issued with the 'DL' prefix, with a similar design to regular Motorcycle plates. In 1982, the government began issuing permanent plates with yearly registration stickers.^[28] Reflective plates were introduced in 1994.

The current plate design is a white serial on a light blue plate. These plates are the same size as regular motorcycle plates. The serial format used by these plates is AB123, running from AA001 to AF965 (as of February 23, 2020)^[17]

Medical doctor plates

Medical doctor plates were first introduced in 1930, and are denoted by the letters starting with MD. When all the MDA - MDZ serials had been issued in the late 1990's , new serials using MAA started being issued.

Image	Dates issued	Description	Slogan	Serial format	Serials issued	Notes
	1973	Blue on white; "73" on bottom left and sticker box on bottom right	"KEEP IT BEAUTIFUL"	MDA-123
	1978	As above, but with no "73"	"KEEP IT BEAUTIFUL"	MD-123
	1982	As above, but with no sticker box	"YOURS TO DISCOVER"	MDA-123
	1994	Blue reflective on white; "ONTARIO" screened in blue on top	"YOURS TO DISCOVER"	123-MAA	001-MAA to 077-MAE (as of April 7, 2023)[17]

Amateur radio plates

Amateur Radio plates were introduced in 1969 as supplemental plates. In 1976, Ontario permitted the call-sign to be on regular passenger plates, eliminating the small supplemental plates.^[28]

Image	First issued	Description	Slogan	Serial format	Serials issued	Notes
	1969	Yellow on black; "RADIO" on top and "AMATEUR" on bottom	none	VE3ABC
	1976	Blue on white; "ONTARIO" screened in blue on top	"KEEP IT BEAUTIFUL"	VE3-ABC
	1983	As above, but with no "73"	"YOURS TO DISCOVER"	VE3ABC		The format switched back to its original format. Returned in 1986.
	1994	Blue reflective on white; "ONTARIO" screened in blue on top	"YOURS TO DISCOVER"	VE3ABC		Switched to new reflective plate
		Blue reflective on white; "ONTARIO" screen in blue on top	"YOURS TO DISCOVER"	VA3AB		Switched to new 5-digit format

Special Event Plates

Image	Date issued	Description	Slogan	Serial format	Notes
	1984		"YOURS TO DISCOVER"		Used in the motorcade of Queen Elizabeth II at provincial events during her Royal Visit of 1984
	1984		"YOURS TO DISCOVER"		Used during the visit of Pope John Paul II to Ontario during the Papal Visit of 1984
	1989		"YOURS TO DISCOVER"		Commemorative plates to celebrate the 50th Anniversary of the QEW highway. Plates used by police.
	1991		"YOURS TO DISCOVER"		Given to MTO employees in celebration of the agency's 75th anniversary.
	2000		"YOURS TO DISCOVER"		Plates for the CCMTA Conference 2000
	2002		"YOURS TO DISCOVER"		Used in the Queen's motorcade during the 2002 Royal Jubilee Visit to Ontario.
	2010		'none'		G20 Summit Special plates used in Toronto
	2016		"YOURS TO DISCOVER"		Given to MTO employees in celebration of the agency's 100th anniversary.

Veteran Plate

Image	First issued	Description	Slogan	Serial format	Serials issued	Notes
	2003	Blue on reflective white with graphic to the left; "ONTARIO" screened in blue centred at top with crown in bottom right	"YOURS TO DISCOVER"	1V2345	1V0001 to 7V9900 ( As of August 7th 2022)	Applicants must confirm their eligibility through the Royal Canadian Legion. Numbers are assigned in format if no personalized message selected.

License Plate Graphics

Plates with graphics are also available.^[41] Graphics first being issued on license plates began in 1996. The variety of graphics includes charities, universities, community organizations and popular Ontario sports teams, such as the Ottawa Senators. All plates offer the French slogan since 2017.^[28]

Image	First issued	Type	Category	Description	Slogan	Serial format	Serials issued	Notes
	1998	Ontario Square and Round Dance Federation	Arts	Blue on reflective white with graphic to the left; "ONTARIO" screened in blue centred at top with crown in bottom right	"YOURS TO DISCOVER"	12SQ34	01SQ01 to 15SQ65 (As of June 1st 2022)
		Breast Cancer Society of Canada	Charity	Blue on reflective white with graphic to the left; "ONTARIO" screened in blue centred at top with crown in bottom right	"YOURS TO DISCOVER"	12BC34
		Canadian Tire Jumpstart Charities	Charity	Blue on reflective white with graphic to the left; "ONTARIO" screened in blue centred at top with crown in bottom right	"YOURS TO DISCOVER"	12JS34
	2007	Farley Foundation	Charity	Blue on reflective white with graphic to the left; "ONTARIO" screened in blue centred at top with crown in bottom right	"YOURS TO DISCOVER"	12FF34
	2015	MADD Canada (Mother's Against Drunk Driving)	Charity	Blue on reflective white with graphic to the left; "ONTARIO" screened in blue centred at top with crown in bottom right	"YOURS TO DISCOVER"	12MD34	01MD01 to 03MD88 (As of April 30th 2022)
	2009	St. John Ambulance	Charity	Blue on reflective white with graphic to the left; "ONTARIO" screened in blue centred at top with crown in bottom right	"YOURS TO DISCOVER"	12SJ34
	2007	48th Highlanders	Community Organizations	Blue on reflective white with graphic to the left; "ONTARIO" screened in blue centred at top with crown in bottom right	"YOURS TO DISCOVER"	12TH34
	2006	Army Cadet League of Canada (Ontario)	Community Organizations	Blue on reflective white with graphic to the left; "ONTARIO" screened in blue centred at top with crown in bottom right	"YOURS TO DISCOVER"	12AL34
	2006	Association of Canadian Distillers	Community Organizations	Blue on reflective white with graphic to the left; "ONTARIO" screened in blue centred at top with crown in bottom right	"YOURS TO DISCOVER"	12CD34	01CD01 to 09CD57 (As of May 30th 2022)
	2007	Canadian Blood Services	Community Organizations	Blue on reflective white with graphic to the left; "ONTARIO" screened in blue centred at top with crown in bottom right	"YOURS TO DISCOVER"	12BL34
	1997	Elmer the Safety Elephant	Community Organizations	Blue on reflective white with graphic to the left; "ONTARIO" screened in blue centred at top with crown in bottom right	"YOURS TO DISCOVER"	12EE34
	1998	Girl Guides of Canada	Community Organizations	Blue on reflective white with graphic to the left; "ONTARIO" screened in blue centred at top with crown in bottom right	"YOURS TO DISCOVER"	12GG34	01GG01 to 10GG28 (As of March 30th 2022)
	2006	Governor General’s Horse Guards Association	Community Organizations	Blue on reflective white with graphic to the left; "ONTARIO" screened in blue centred at top with crown in bottom right	"YOURS TO DISCOVER"	12HG34
		Grand Lodge A.F. & A.M. of Canada	Community Organizations	Blue on reflective white with graphic to the left; "ONTARIO" screened in blue centred at top with crown in bottom right	"YOURS TO DISCOVER"	12FM34
	1998	Grand Lodge of Ontario, Independent Order of Odd Fellows	Community Organizations	Blue on reflective white with graphic to the left; "ONTARIO" screened in blue centred at top with crown in bottom right	"YOURS TO DISCOVER"	12OF34
	1998	Knights of Columbus	Community Organizations	Blue on reflective white with graphic to the left; "ONTARIO" screened in blue centred at top with crown in bottom right	"YOURS TO DISCOVER"	12VJ34
	2001	Lincoln and Welland Regiment Foundation	Community Organizations	Blue on reflective white with graphic to the left; "ONTARIO" screened in blue centred at top with crown in bottom right	"YOURS TO DISCOVER"	12LW34
	2006	Ottawa Valley Adventure Playground	Community Organizations	Blue on reflective white with graphic to the left; "ONTARIO" screened in blue centred at top with crown in bottom right	"YOURS TO DISCOVER"	12AP34
	2005	Queens Own Rifles of Canada	Community Organizations	Blue on reflective white with graphic to the left; "ONTARIO" screened in blue centred at top with crown in bottom right	"YOURS TO DISCOVER"	12QO34
	2006	Queen’s York Rangers	Community Organizations	Blue on reflective white with graphic to the left; "ONTARIO" screened in blue centred at top with crown in bottom right	"YOURS TO DISCOVER"	12QR34
	1996	Radio Amateurs of Canada	Community Organizations	Blue on reflective white with graphic to the left; "ONTARIO" screened in blue centred at top with crown in bottom right	"YOURS TO DISCOVER"	12HM34
	2005	Rotary International	Community Organizations	Blue on reflective white with graphic to the left; "ONTARIO" screened in blue centred at top with crown in bottom right	"YOURS TO DISCOVER"	12RI34
	2001	Royal Canadian Legion (Ontario Provincial Command)	Community Organizations	Blue on reflective white with graphic to the left; "ONTARIO" screened in blue centred at top with crown in bottom right	"YOURS TO DISCOVER"	12CL34
	2006	Trillium Gift of Life Network	Community Organizations	Blue on reflective white with graphic to the left; "ONTARIO" screened in blue centred at top with crown in bottom right	"YOURS TO DISCOVER"	12GL34		Introduced to promote organ donation.
	2006	Royal Hamilton Light Infantry	Community Organizations	Blue on reflective white with graphic to the left; "ONTARIO" screened in blue centred at top with crown in bottom right	"YOURS TO DISCOVER"	12CA34
	2006	Royal Regiment of Canada	Community Organizations	Blue on reflective white with graphic to the left; "ONTARIO" screened in blue centred at top with crown in bottom right	"YOURS TO DISCOVER"	12RG34	01RG01 to 02RG29 (As of May 30th 2022)
	2005	Royal Regiment of Canadian Artillery	Community Organizations	Blue on reflective white with graphic to the left; "ONTARIO" screened in blue centred at top with crown in bottom right	"YOURS TO DISCOVER"	12AD34
	1996	Scouts Canada	Community Organizations	Blue on reflective white with graphic to the left; "ONTARIO" screened in blue centred at top with crown in bottom right	"YOURS TO DISCOVER"	12SC34	01SC01 to 11SC61 (As of May 30th 2022)
	1996	Shriners International	Community Organizations	Blue on reflective white with graphic to the left; "ONTARIO" screened in blue centred at top with crown in bottom right	"YOURS TO DISCOVER"	12SR34
	2010	Support Our Troops	Community Organizations	Blue on reflective white with graphic to the left; "ONTARIO" screened in blue centred at top with crown in bottom right	"YOURS TO DISCOVER"	12YR34	01YR01 to 21YR66 (As of April 30th 2022)	Some money from the sale of the Yellow Ribbon plates is donated by the province to the Canadian Forces Personnel Assistance Fund to assist Canadian military veterans.[42] The "yellow ribbon" design is indicated by the "YR" code.
	2006	Toronto Scottish Regiment	Community Organizations	Blue on reflective white with graphic to the left; "ONTARIO" screened in blue centred at top with crown in bottom right	"YOURS TO DISCOVER"	12TS34	01TS01 to 02TS38 (As of May 30th 2022)
	2006	Ducks Unlimited	Environment	Blue on reflective white with graphic to the left; "ONTARIO" screened in blue centred at top with crown in bottom right	"YOURS TO DISCOVER"	12DU34	01DU01 to 14DU05 (As of January 30th 2022)
	1998	Ontario Federation of Anglers and Hunters	Environment	Blue on reflective white with graphic to the left; "ONTARIO" screened in blue centred at top with crown in bottom right	"YOURS TO DISCOVER"	12AH34
	1998	Don't Drink and Drive	Government	Blue on reflective white with graphic to the left; "ONTARIO" screened in blue centred at top with crown in bottom right	"YOURS TO DISCOVER"	12DD34
	2010	Flag of Ontario	Government	Blue on reflective white with graphic to the left; "ONTARIO" screened in blue centred at top with crown in bottom right	"YOURS TO DISCOVER"	12ON34	01ON01 to 03ON53 (As of December 31st 2018)
	1996	Road Safety	Government	Blue on reflective white with graphic to the left; "ONTARIO" screened in blue centred at top with crown in bottom right	"YOURS TO DISCOVER"	12RS34
	1998	Anishinabek Nation	Heritage / Historical	Blue on reflective white with graphic to the left; "ONTARIO" screened in blue centred at top with crown in bottom right	"YOURS TO DISCOVER"	12AN34	01AN01 to 18AN81 (As of October 31st 2021)
	1997	Canadian Flag	Heritage / Historical	Blue on reflective white with graphic to the left; "ONTARIO" screened in blue centred at top with crown in bottom right	"YOURS TO DISCOVER"	12CF34 12FC34	01CF01 to 99CF99 01FC01 to 11FC60 (As of March 31st 2022)
	2005	Franco-Ontarian Flag (English)	Heritage / Historical	Blue on reflective white with graphic to the left; "ONTARIO" screened in blue centred at top with crown in bottom right	"YOURS TO DISCOVER"	12FL34	01FL01 to 06FL08 (As of July 1st 2014)	The English slogan plates start at 01FL01
	2009	Franco-Ontarian Flag (French)	Heritage / Historical	Blue on reflective white with graphic to the left; "ONTARIO" screened in blue centred at top with crown in bottom right	"TANT A DECOUVRIR"	12FL34	50FL01 to 64FL14 (As of July 1st 2021)	The french slogan plates start at 50FL01
	1996	Loon	Heritage / Historical	Blue on reflective white with graphic to the left; "ONTARIO" screened in blue centred at top with crown in bottom right	"YOURS TO DISCOVER"	12LN34 (1996) 12LM34 (2002)	01LN01 to 99LN99 01LM01 to 61LM13 (As of July 1st 2021)
	2006	Nishnawbe Aski Nation	Heritage / Historical	Blue on reflective white with graphic to the left; "ONTARIO" screened in blue centred at top with crown in bottom right	"YOURS TO DISCOVER"	12NA34	01NA01 to 01NA82 (As of March 1st 2022)
	1996	Trillium	Heritage / Historical	Blue on reflective white with graphic to the left; "ONTARIO" screened in blue centred at top with crown in bottom right	"YOURS TO DISCOVER"	12TR34 (1996) 12TL34 (2004)	01TR01 to 99TR99 01TL01 to 40TL37 (As of February 1st 2021)
	2013	United Empire Loyalists' Association of Canada	Heritage / Historical	Blue on reflective white with graphic to the left; "ONTARIO" screened in blue centred at top with crown in bottom right	"YOURS TO DISCOVER"	12UE34		Last batch of plates were ordered in June 2018. Remaining plates available while supply lasts at ServiceOntario.[43]
	1996	Heart	Novelty	Blue on reflective white with graphic to the left; "ONTARIO" screened in blue centred at top with crown in bottom right	"YOURS TO DISCOVER"	12RH34
	1996	I Heart	Novelty	Blue on reflective white with graphic to the left; "ONTARIO" screened in blue centred at top with crown in bottom right	"YOURS TO DISCOVER"	12LV34
	1998	Fire Service Society	Professional	Blue on reflective white with graphic to the left; "ONTARIO" screened in blue centred at top with crown in bottom right	"YOURS TO DISCOVER"	12FD34 (1998) 12FS34 (2004) 12FR34 (2012) 12RF34 (2021)	01FD01 to 99FD99 01FS01 to 99FS99 01FR01 to 99FR99 01RF01 to 10RF60 (As of July 31st 2022)
	201X	Ontario Association of Veterinary Technicians	Professional	Blue on reflective white with graphic to the left; "ONTARIO" screened in blue centred at top with crown in bottom right	"YOURS TO DISCOVER"	12ME34		Plates can be purchased through the OAVT website.
	2005	Ontario Paramedic Association	Professional	Blue on reflective white with graphic to the left; "ONTARIO" screened in blue centred at top with crown in bottom right	"YOURS TO DISCOVER"	12PA34 12EP34		Changed from PA to EP
	2008	Ontario Professional Fire Fighter Association (OPFFA)	Professional	Blue on reflective white with graphic to the left; "ONTARIO" screened in blue centred at top with crown in bottom right	"YOURS TO DISCOVER"	12PF34		Plates are only available through the OPFFA
	2011	Professional Engineers Ontario	Professional	Blue on reflective white with graphic to the left; "ONTARIO" screened in blue centred at top with crown in bottom right	"YOURS TO DISCOVER"	12PE34
	2009	Equine Canada	Sports / Recreation	Blue on reflective white with graphic to the left; "ONTARIO" screened in blue centred at top with crown in bottom right	"YOURS TO DISCOVER"	12EC34	01EC01 to 07EC41 (As of November 30th 2021)
	1996	Hamilton Tiger-Cats	Sports / Recreation	Blue on reflective white with graphic to the left; "ONTARIO" screened in blue centred at top with crown in bottom right	"YOURS TO DISCOVER"	12TC34	01TC01 to 21TC98 (As of May 9th 2022)
	2006	International Ch’ang-Hon Taekwon-Do Federation	Sports / Recreation	Blue on reflective white with graphic to the left; "ONTARIO" screened in blue centred at top with crown in bottom right	"YOURS TO DISCOVER"	12TD34	01TD01 to 04TD75 (As of May 30th 2022)
	1996	Ontario Federation of Snowmobile Clubs	Sports / Recreation	Blue on reflective white with graphic to the left; "ONTARIO" screened in blue centred at top with crown in bottom right	"YOURS TO DISCOVER"	12SN34	01SN01 to 27SN67 (As of May 1st 2015)
	1996	Ontario Lacrosse Association	Sports / Recreation	Blue on reflective white with graphic to the left; "ONTARIO" screened in blue centred at top with crown in bottom right	"YOURS TO DISCOVER"	12LX34	01LX01 to 14LX35 (As of May 30th 2022)
	2014	Ottawa REDBLACKS	Sports / Recreation	Blue on reflective white with graphic to the left; "ONTARIO" screened in blue centred at top with crown in bottom right	"YOURS TO DISCOVER"	12RB34	01RB01 to 03RB95 (As of September 30th 2021)
	1996	Ottawa Senators	Sports / Recreation	Blue on reflective white with graphic to the left; "ONTARIO" screened in blue centred at top with crown in bottom right	"YOURS TO DISCOVER"	12SE34	01SE01 to 74SE07 (As of March 4th 2022)
	1996	Toronto Argonauts	Sports / Recreation	Blue on reflective white with graphic to the left; "ONTARIO" screened in blue centred at top with crown in bottom right	"YOURS TO DISCOVER"	12AR34	01AR01 to 17AR96 (As of May 30th 2022)
	1996	Toronto Blue Jays	Sports / Recreation	Blue on reflective white with graphic to the left; "ONTARIO" screened in blue centred at top with crown in bottom right	"YOURS TO DISCOVER"	12JA34	01JA01 to 94JA14 (As of February 28th 2022)
	1996	Toronto Maple Leafs	Sports / Recreation	Blue on reflective white with graphic to the left; "ONTARIO" screened in blue centred at top with crown in bottom right	"YOURS TO DISCOVER"	12ML34 (1996) 12TO34 (2002) 12TM34 (2007)	01ML01 to 99ML99 01TO01 to 99TO99 01TM01 to 83TM74 (As of April 5th 2022)
	1996	Toronto Raptors	Sports / Recreation	Blue on reflective white with graphic to the left; "ONTARIO" screened in blue centred at top with crown in bottom right	"YOURS TO DISCOVER"	12RA34	01RA01 to 54RA47 (As of May 9th 2022)
	2005	Lakehead University	Universities / Colleges	Blue on reflective white with graphic to the left; "ONTARIO" screened in blue centred at top with crown in bottom right	"YOURS TO DISCOVER"	12LU34
		George Brown College	Universities / Colleges	Blue on reflective white with graphic to the left; "ONTARIO" screened in blue centred at top with crown in bottom right	"YOURS TO DISCOVER"	12GB34
	1996	Queen’s University	Universities / Colleges	Blue on reflective white with graphic to the left; "ONTARIO" screened in blue centred at top with crown in bottom right	"YOURS TO DISCOVER"	12QU34	01QU01 to 14QU88 (As of February 16th 2022)
	1997	University of Toronto	Universities / Colleges	Blue on reflective white with graphic to the left; "ONTARIO" screened in blue centred at top with crown in bottom right	"YOURS TO DISCOVER"	12UT34
	2001	University of Waterloo	Universities / Colleges	Blue on reflective white with graphic to the left; "ONTARIO" screened in blue centred at top with crown in bottom right	"YOURS TO DISCOVER"	12UW34		Image depicts license plate with both a graphic element and a personalized registration.
	1996	Wilfrid Laurier University	Universities / Colleges	Blue on reflective white with graphic to the left; "ONTARIO" screened in blue centred at top with crown in bottom right	"YOURS TO DISCOVER"	12WL34

Discontinued Graphics

Certain graphics have been discontinued and are no longer issued. A plate design is considered discontinued once it is no longer offered at ServiceOntario.

Image	First issued	Discontinued	Type	Category	Description	Slogan	Serial format	Serials issued	Notes
	1996	2002	Star Trek	Arts / Entertainment	Blue on reflective white with graphic to the left; "ONTARIO" screened in blue centred at top with crown in bottom right	"YOURS TO DISCOVER"	12ST34		Discontinued due to licensing issues.
			Cadet Instructor Cadre	Community Organizations	Blue on reflective white with graphic to the left; "ONTARIO" screened in blue centred at top with crown in bottom right	"YOURS TO DISCOVER"	12IV34	01IV01 to 03IV30 (As of November 30th 2013)
			Canadian Auxiliary Coast Guard	Community Organizations	Blue on reflective white with graphic to the left; "ONTARIO" screened in blue centred at top with crown in bottom right	"YOURS TO DISCOVER"	12CG34	01CG01 to 03CG32 (As of November 30th 2014)
	1997	2020	Canadian National Sportsmen's Show	Community Organizations	Blue on reflective white with graphic to the left; "ONTARIO" screened in blue centred at top with crown in bottom right	"YOURS TO DISCOVER"	12NS34	01NS01 to 08NS10 (As of June 14th 2010)
	2009		Canadian Snowbird Association	Community Organizations	Blue on reflective white with graphic to the left; "ONTARIO" screened in blue centred at top with crown in bottom right	"YOURS TO DISCOVER"	12CS34	01CS01 to 04CS13 (As of May 26th 2013)
		2022	Geocaching	Community Organizations	Blue on reflective white with graphic to the left; "ONTARIO" screened in blue centred at top with crown in bottom right	"YOURS TO DISCOVER"	12GC34	01GC01 to 04GC05 (As of August 21st 2015)
	1998		Humane Society	Community Organizations	Blue on reflective white with graphic to the left; "ONTARIO" screened in blue centred at top with crown in bottom right	"YOURS TO DISCOVER"	12HS34	01HS01 to 11HS82 (As of October 31st 2009)
	2001	2018	Kawartha Lakes	Community Organizations	Blue on reflective white with graphic to the left; "ONTARIO" screened in blue centred at top with crown in bottom right	"YOURS TO DISCOVER"	12KL34
	2009	2019	Lions Club	Community Organizations	Blue on reflective white with graphic to the left; "ONTARIO" screened in blue centred at top with crown in bottom right	"YOURS TO DISCOVER"	12LC34	01LC01 to 09LC60 (As of February 28th 2015)
	2000		Millennium	Heritage / Historical	Blue on reflective white with graphic to the left; "ONTARIO" screened in blue centred at top with crown in bottom right	"YOURS TO DISCOVER"	12MM34	01MM01 to 14MM44 (As of February 28th 2009)
	2009	2012	Niagara War of 1812	Heritage / Historical	Blue on reflective white with graphic to the left; "ONTARIO" screened in blue centred at top with crown in bottom right	"YOURS TO DISCOVER"	12NI34
	2005	2010	Ottawa Renegades	Sports / Recreation	Blue on reflective white with graphic to the left; "ONTARIO" screened in blue centred at top with crown in bottom right	"YOURS TO DISCOVER"	12RR34
	2007		Special Olympics	Sports / Recreation	Blue on reflective white with graphic to the left; "ONTARIO" screened in blue centred at top with crown in bottom right	"YOURS TO DISCOVER"	12SA34
	1998	2005	Toronto SkyDome	Sports / Recreation	Blue on reflective white with graphic to the left; "ONTARIO" screened in blue centred at top with crown in bottom right	"YOURS TO DISCOVER"	12SD34	01SD01 to 08SD50 (As of April 30th 2022)
	1997	2007	King's College	Universities / Colleges	Blue on reflective white with graphic to the left; "ONTARIO" screened in blue centred at top with crown in bottom right	"YOURS TO DISCOVER"	12KC34
	1998	2004	University of Guelph	Universities / Colleges	Blue on reflective white with graphic to the left; "ONTARIO" screened in blue centred at top with crown in bottom right	"YOURS TO DISCOVER"	12UG34
	1998	2004	York University	Universities / Colleges	Blue on reflective white with graphic to the left; "ONTARIO" screened in blue centred at top with crown in bottom right	"YOURS TO DISCOVER"	12YU34

Alternative supplier

In 2016, an increase in the rate of defective plates combined with an increase in the number of registered vehicles led to the Ontario Ministry of Transportation becoming unable to keep up with demand for plates. It placed an order for 100,000 units from the Waldale Irwin Holdson Group, the largest licence plate manufacturer in North America.^[49] Plates are produced by the Waldale Manufacturing facility in Amherst, Nova Scotia.

Plates from the first batch of 35,000 can be identified due to the use of embossed letters and numbers from Nova Scotia plates, which differ in appearance from Ontarian fonts.^[50] The province continues to order supplementary batches of plates from Waldale. Since 2017, the Ontario die set has been in use. These plates are almost identical to those made by Trilcor Industries. The Waldale made plates have squared off edges and smaller bolt holes.^[51]

Defective plates from 2012

In 2012, reports began to appear of plates deteriorating earlier than otherwise expected. The reflective layers detached themselves from the metal plate, making the plate unreadable. Approximately 1% of licence plates issued have this defect. The defect has appeared in both front and rear plates. Trilcor Industries and the MTO offer a five-year warranty on plates and will replace the defective plates at no cost.^[52] Plate replacement for other reasons (theft, damage, wear, etc.) is done at a cost.

Conventional plates can be replaced "over-the-counter" at a licence office, but the complete process for personalized plates takes over six months.^[53]

Driving with an illegible plate is an offence punishable by fine, under the Highway Traffic Act.^[54]

In 2015, the Ministry of Community Safety and Correctional Services hired Canada's National Research Council to identify the root cause of licence plate de-lamination. The NRC's report indicated that the reflective material adhered poorly to the aluminium plates, and that embossing process stressed the materials to the point that the reflective layer would puncture and de-laminate. At that point, water and other contaminants could slip between the layers. Also, road de-icing materials contributed to the de-lamination. The report found that this problem was present in samples from all types of plates, except for motorcycle plates.

The report recommended that Trilcor work with its supplier of laminating layer to resolve the problem, and indicated that a thicker layer of material would likely perform better.^[55]

• 
  Example of early deterioration of front Ontario Number Plate
• 
  Early deterioration on a rear plate. The aluminum base is visible where the reflective layer has fallen off.
• 
  Close-up view of early damage to a front licence plate of an Ontario car. The reflective layer can be seen de-laminating and separating from the metal base.
• 
  Close-up view of similar damage to the rear plate of the same car, indicating this problem is not confined to the front plates.
• 
  For comparison purposes, corrosion on this plate is due to age and wear, rather than a defective substrate.

Illegality of licence plate covers

Many vehicle owners place clear plastic covers over their licence plates to protect their already defective licence plates (2012) from premature deterioration.^[56] According to Ontario's Highway Traffic Act Section 13.2, licence plate covers are considered an obstruction and are illegal in the province of Ontario.^[57] In the rare event that the officer chooses to issue the citation, the offence carries a minimum fine of $85.^[58] On the contrary, drivers operating a motor vehicle with defective (i.e. unreadable) number plates can be charged with the same offence.^[57] This has left defective number plate owners with little choice but to obtain replacement plates from the MTO, orders which have taken months (or over six months for customised plates) to process.^[56]

Several motorists sought other solutions to prevent their number plates from deterioration, such as placing the front plate on the dashboard instead of affixing it to the front bumper.^[59] Others have omitted the front licence plate altogether since it is not uncommon to see out-of-province vehicles on Ontario roadways (many jurisdictions in North America, including neighbouring Quebec and Michigan, do not require front plates). In most cases, vehicle owners who attempted the aforementioned solutions were convicted of the same offence (HTA section 13.2).^[59]

Defective plates from 2020

Recalled 2020 plate design that is difficult to read at night.

On 15 February 2020, two weeks after the province began issuing plates with the new design, off-duty Kingston Police Sergeant Steve Koopman posted a photo on Twitter showing a vehicle with the new plate at night, stating that "they're virtually unreadable at night".^[60] Government spokesperson Lisa Thompson, the Minister of Government and Consumer Services, stated in a news conference that the new design had undergone a "rigorous testing program", that the government had consulted with "key stakeholders" including law enforcement, and that the plates were not problematic.^[60][61] She also criticized the earlier "Liberal plates",^[60] referring to a batch of plates issued during a previous government that peeled. Thompson stated that manufacturing and quality control are the responsibility of 3M.^[61] The redesigned plates also caused problems for photo radar cameras, which have difficulty reading the name of the jurisdiction. The name is rendered in a smaller font size than earlier plates.^[61] The president of the Toronto Police Association stated that the organization had not been consulted on the new design.^[60]

The Ford Government had insisted for days that there was not an issue with the plates; however, on February 20, it announced that 3M would make an "enhanced licence plate" to be available in less than three weeks.^[62] On February 28, the government announced that the distribution of the defective plates would cease on March 4, that the enhanced plates would be ready by March 16 at "no cost to Ontario taxpayers", those who had already been issued the new plates will receive the enhanced version in the mail, and until the enhanced plates were ready, the government switched back to the previous plate design.^[63][64] This design was later scrapped on May 6.^[20]

Sticker renewal fee

On February 22, 2022, the Ford Government eliminated licence plate renewal fees and the requirement to have a licence plate sticker for the nearly eight million passenger vehicles, light-duty trucks, motorcycles and mopeds, effective March 13, 2022.^[65]