Guillermo Vilas defeated Adriano Panatta 6–1, 6–4, 6–4 to win the 1975 ATP Buenos Aires singles competition. Vilas was the defending champion.

Seeds

A champion seed is indicated in bold text while text in italics indicates the round in which that seed was eliminated.

1. Guillermo Vilas (Champion)
2. Adriano Panatta (Final)

Draw

Final

	Final
	1	Guillermo Vilas	6	6	6
	2	Adriano Panatta	1	4	4

Section 1

	First Round									Second Round									Quarterfinals									Semifinals
	1	G Vilas	6	6
		R Carruthers	2	3						1	G Vilas	6	7
		L Álvarez	6	6							L Álvarez	4	5
		T Waltke	1	3															1	G Vilas	7	6
		Z Franulović	6	6																Z Franulović	5	3
		B Prajoux	1	4							Z Franulović	6	6	6
		R Benavides	1	6							H J Pohmann	0	7	2
		H J Pohmann	6	7																								1	G Vilas	6	7	6
		V Gerulaitis	4	6	5																								R Cano	2	5	3
		R Cano	6	2	7						R Cano	6	4	6
		T Quintin	3	2							U Pinner	1	6	2
		U Pinner	6	6																R Cano	3	6	6
		I Molina	2	6	6															I Molina	6	2	4
			6	0	4						I Molina	6	6
			6	2	2						J Thamin	2	4
		J Thamin	3	6	6

Section 2

	First Round									Second Round									Quarterfinals									Semifinals
		P Rodríguez	5	3
		C Kirmayr	7	6							C Kirmayr	2	3
		V Amaya	0	4							V Pecci Sr.	6	6
		V Pecci Sr.	6	6																V Pecci Sr.	5	0
		J Ganzábal	7	6	6															J Fillol Sr.	7	6
		H Kary	6	7	3						J Ganzábal	2	3
			3	1							J Fillol Sr.	6	6
		J Fillol Sr.	6	6																									J Fillol Sr.	2	3	6	7	3
		J Mandarino	6	6																								2	A Panatta	6	6	4	6	6
		C Landó	4	4							J Mandarino	WO
		T Koch	4	6	6						T Koch
		P Bertolucci	6	2	4															J Mandarino	4	3
		P Cornejo	6	2															2	A Panatta	6	6
		J Fassbender	3	0	R						P Cornejo	4	6
		J Velasco Sr.	3	2						2	A Panatta	6	7
	2	A Panatta	6	6

External links

• 1975 ATP Buenos Aires Singles draw