Men's doubles
2018 Challenger Banque Nationale de Gatineau
Champions	Robert Galloway Bradley Klahn
Runners-up	Darian King Peter Polansky
Score	7–6(7–4), 4–6, [10–8]

Bradley Klahn and Jackson Withrow were the defending champions but only Klahn chose to defend his title, partnering Robert Galloway. Klahn successfully defended his title.

Klahn and Galloway won the title after defeating Darian King and Peter Polansky 7–6^(7–4), 4–6, [10–8] in the final.

Seeds

Draw

Key

• Q = Qualifier
• WC = Wild card
• LL = Lucky loser
• Alt = Alternate
• SE = Special exempt
• PR = Protected ranking
• ITF = ITF entry
• JE = Junior exempt
• w/o = Walkover
• r = Retired
• d = Defaulted
• SR = Special ranking

	First round							Quarterfinals							Semifinals							Final
	1	B Mousley M Reid	6	6
		S Napolitano B Schnur	4	4				1	B Mousley M Reid	6	62	[10]
		H Johnson Y Johnson	6	3	[11]				H Johnson Y Johnson	3	77	[3]
		A Escoffier U Humbert	4	6	[9]										1	B Mousley M Reid	4	2
	4	D King P Polansky	713	7											4	D King P Polansky	6	6
		L Broady J De Loore	611	5				4	D King P Polansky	4	77	[10]
		Shintaro Imai K Uchida	6	77					S Imai K Uchida	6	64	[3]
		Y Takahashi Renta Tokuda	4	63																		4	D King P Polansky	64	6	[8]
		L Grigelis E Leshem	6	6																		2	R Galloway B Klahn	77	4	[10]
	WC	J Boulais Pavel Krainik	2	4					L Grigelis E Leshem	64	710	[13]
		M Krueger A Lawson	710	77					M Krueger A Lawson	77	68	[11]
	3	L Miedler M Neuchrist	68	64												L Grigelis E Leshem	4	5
	WC	A Galarneau B Sigouin	6	6											2	R Galloway B Klahn	6	7
		Z Li F Peliwo	1	3				WC	A Galarneau B Sigouin	5	5
	WC	JM Lin Nicaise Muamba	3	3				2	R Galloway B Klahn	7	7
	2	R Galloway B Klahn	6	6

References

• Main Draw