125 Cc Classification
| Pos | Rider | Manufacturer | Laps | Time | Grid | Points |
|---|---|---|---|---|---|---|
| 1 | Fausto Gresini | Honda | 26 | 36:29.927 | 1 | 20 |
| 2 | Loris Capirossi | Honda | 26 | +18.493 | 2 | 17 |
| 3 | Alessandro Gramigni | Aprilia | 26 | +23.101 | 7 | 15 |
| 4 | Ezio Gianola | Derbi | 26 | +29.088 | 4 | 13 |
| 5 | Hans Spaan | Honda | 26 | +33.230 | 10 | 11 |
| 6 | Nobuyuki Wakai | Honda | 26 | +33.629 | 13 | 10 |
| 7 | Heinz Lüthi | Honda | 26 | +34.115 | 3 | 9 |
| 8 | Gabriele Debbia | Aprilia | 26 | +34.237 | 8 | 8 |
| 9 | Ralf Waldmann | Honda | 26 | +34.460 | 11 | 7 |
| 10 | Dirk Raudies | Honda | 26 | +35.230 | 6 | |
| 11 | Ian McConnachie | Honda | 26 | +42.905 | 5 | |
| 12 | Adolf Stadler | JJ Cobas | 26 | +47.525 | 15 | 4 |
| 13 | Hisashi Unemoto | Honda | 26 | +54.431 | 3 | |
| 14 | Steve Patrickson | Honda | 26 | +1:00.339 | 2 | |
| 15 | Johnny Wickström | Honda | 26 | +1:00.539 | 1 | |
| 16 | Koji Takada | Honda | 26 | +1:06.139 | ||
| 17 | Julián Miralles | JJ Cobas | 26 | +1:06.935 | ||
| 18 | Serafino Foti | Honda | 26 | +1:07.493 | ||
| 19 | Manuel Hernández | Honda | 26 | +1:08.123 | ||
| 20 | Arie Molenaar | Honda | 26 | +1:08.427 | ||
| 21 | Alain Bronec | Honda | 26 | +1:15.924 | ||
| 22 | Thierry Feuz | Honda | 26 | +1:19.698 | ||
| 23 | Francisco Debon | JJ Cobas | 26 | +1:19.849 | ||
| 24 | Maurizio Vitali | Gazzaniga | 25 | +1 lap | 12 | |
| 25 | Luis Alvaro | Derbi | 25 | +1 lap | ||
| Ret | Kinya Wada | Honda | 25 | Retired | ||
| Ret | Bruno Casanova | Honda | 18 | Retired | 6 | |
| Ret | Peter Öttl | Rotax | 17 | Retired | ||
| Ret | Herri Torrontegui | JJ Cobas | 15 | Retired | 14 | |
| Ret | Jorge Martínez | JJ Cobas | 10 | Retired | 9 | |
| Ret | Noboru Ueda | Honda | 8 | Retired | 5 | |
| Ret | Kazuto Sakata | Honda | 5 | Retired | ||
| Ret | Manuel Herreros | JJ Cobas | 4 | Retired | ||
| Ret | Alfred Waibel | Honda | 4 | Retired | ||
| Ret | Gimmi Bosio | Honda | 0 | Retired | ||
| Ret | Emilio Cuppini | Gazzaniga | 0 | Retired | ||
| DNQ | Jos van Dongen | Honda | ||||
| DNQ | Alan Patterson | Honda | ||||
| DNQ | Stefan Kurfiss | Honda | ||||
| DNQ | Stefan Bragger | Honda | ||||
| DNQ | Hans Koopman | Honda | ||||
| DNQ | Robin Appleyard | Honda | ||||
| DNQ | Peter Galvin | Honda | ||||
| DNQ | Wolfgang Fritz | Honda | ||||
| DNQ | René Dünki | Honda | ||||
| DNQ | Hubert Abold | Honda | ||||
| DNQ | Janez Pintar | Honda | ||||
| DNQ | Taru Rinne | Honda | ||||
Read more about this topic: 1991 Italian Motorcycle Grand Prix