# 1975 ATP Buenos Aires – Singles

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

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

### Section 1

| First Round | First Round | First Round | First Round | First Round | Second Round | Second Round | Second Round | Second Round | Second Round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals | 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 | First Round | First Round | First Round | First Round | Second Round | Second Round | Second Round | Second Round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals | Semifinals | Semifinals | 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 | | | | | | | | | | | | | | | | |