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.

Guillermo Vilas (Champion) Adriano Panatta (Final)

Draw

Key R – Retired WO – Walkover NB: All rounds up to but not including the semifinals were the best of 3 sets. The semifinals and final were the best of 5 sets.

Final

Section 1

Section 2

External links 1975 ATP Buenos Aires Singles draw