# 1981 Geneva Open – Singles

Balázs Taróczy was the defending champion, but lost in the first round this year.
Björn Borg successfully defended his title, defeating Tomáš Šmíd 6–4, 6–3 in the final.

## Seeds

* Björn Borg (champion)
* Víctor Pecci (second round)
* Balázs Taróczy (first round)
* Tomáš Šmíd (final)
* José Luis Damiani (quarterfinals)
* Ricardo Cano (quarterfinals)
* Heinz Günthardt (quarterfinals)
* N/A

## 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

### Finals

| Semifinals | Semifinals | Semifinals | Semifinals | Semifinals | Final | Final | Final | Final |
| 1 | Björn Borg | 6 | 0 | 6 | | | | |
| | Manuel Orantes | 4 | 6 | 1 | | | | |
| | Manuel Orantes | 4 | 6 | 1 | 1 | Björn Borg | 6 | 6 |
| | | | | | 4 | Tomáš Šmíd | 4 | 3 |
| 4 | Tomáš Šmíd | 6 | 6 | | 4 | Tomáš Šmíd | 4 | 3 |
| | Joakim Nyström | 1 | 0 | | | | | |

### Top half

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 1 | B Borg | 6 | 6 | | | | | | | | | | | | | | | |
| | M Wilander | 1 | 1 | | 1 | B Borg | 6 | 6 | | | | | | | | | | |
| | H Simonsson | 2 | 3 | | | P Arraya | 2 | 2 | | | | | | | | | | |
| | P Arraya | 6 | 6 | | | | | | 1 | B Borg | 6 | 6 | | | | | | |
| | J López-Maeso | 3 | 7 | 6 | | | | | 7 | H Günthardt | 2 | 3 | | | | | | |
| | R Stadler | 6 | 5 | 2 | | J López-Maeso | 4 | 1 | | | | | | | | | | |
| | B Pirow | 6 | 2 | 5 | 7 | H Günthardt | 6 | 6 | | | | | | | | | | |
| 7 | H Günthardt | 1 | 6 | 7 | | | | | | | | | | 1 | B Borg | 6 | 0 | 6 |
| 3 | B Taróczy | 4 | 6 | | | | | | | | | | | | M Orantes | 4 | 6 | 1 |
| | M Orantes | 6 | 7 | | | M Orantes | 7 | 6 | | | | | | | | | | |
| | P Rebolledo | 1 | 4 | | | D Perez | 5 | 2 | | | | | | | | | | |
| | D Perez | 6 | 6 | | | | | | | M Orantes | 6 | 4 | 6 | | | | | |
| | J Brown | 6 | 6 | | | | | | 5 | JL Damiani | 4 | 6 | 1 | | | | | |
| | B Boileau | 1 | 2 | | | J Brown | 0 | 4 | | | | | | | | | | |
| | S Birner | 6 | 4 | 3 | 5 | JL Damiani | 6 | 6 | | | | | | | | | | |
| 5 | JL Damiani | 3 | 6 | 6 | | | | | | | | | | | | | | |

### Bottom half

| 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 |
| | F Punčec | 4 | 7 | 3 | | | | | | | | | | | | |
| | R Ycaza | 6 | 6 | 6 | | R Ycaza | 6 | 6 | | | | | | | | |
| | I Dupasquier | 6 | 7 | | | I Dupasquier | 3 | 4 | | | | | | | | |
| | P Bertolucci | 3 | 5 | | | | | | | R Ycaza | 1 | 1 | | | | |
| | Z Kuhárszky | 6 | 3 | 2 | | | | | 4 | T Šmíd | 6 | 6 | | | | |
| | M Martinez | 4 | 6 | 6 | | M Martinez | 5 | 3 | | | | | | | | |
| | J Norbäck | 1 | 0 | | 4 | T Šmíd | 7 | 6 | | | | | | | | |
| 4 | T Šmíd | 6 | 6 | | | | | | | | | | 4 | T Šmíd | 6 | 6 |
| 6 | R Cano | 6 | 7 | 6 | | | | | | | | | | J Nyström | 1 | 0 |
| | P Složil | 7 | 6 | 1 | 6 | R Cano | 6 | 6 | | | | | | | | |
| | B Fritz | 4 | 4 | | | Ž Franulović | 2 | 2 | | | | | | | | |
| | Ž Franulović | 6 | 6 | | | | | | 6 | R Cano | 3 | 3 | | | | |
| | R Venter | 5 | 6 | 3 | | | | | | J Nyström | 6 | 6 | | | | |
| | J Nyström | 7 | 3 | 6 | | J Nyström | 7 | 6 | | | | | | | | |
| | R Moore | 2 | 2 | | 2 | V Pecci | 5 | 3 | | | | | | | | |
| 2 | V Pecci | 6 | 6 | | | | | | | | | | | | | |