| Circuit | Autodromo Nazionale di Monza |
|---|---|
| Date | 1981-09-13 |
| Round | 13 |
| Pos | Driver | Team | Grid | Laps | Time/Status | Fastest Lap | Pts |
|---|---|---|---|---|---|---|---|
| 1 | Alain Prost | Renault | 3 | 52 | 1:26:36.897 | — | 9 |
| 2 | Alan Jones | Williams | 5 | 52 | +22.175 | — | 6 |
| 3 | Carlos Reutemann | Williams | 2 | 52 | +50.587 | — | 4 |
| 4 | Elio de Angelis | Team Lotus | 11 | 52 | +1:32.902 | — | 3 |
| 5 | Didier Pironi | Ferrari | 8 | 52 | +1:34.522 | — | 2 |
| 6 | Nelson Piquet | Brabham | 6 | 51 | Engine | — | 1 |
| 7 | Andrea de Cesaris | McLaren | 16 | 51 | Puncture | — | 0 |
| 8 | Bruno Giacomelli | Alfa Romeo | 10 | 50 | +2 Laps | — | 0 |
| 9 | Jean-Pierre Jarier | Osella | 18 | 50 | +2 Laps | — | 0 |
| 10 | Brian Henton | Toleman | 23 | 49 | +3 Laps | — | 0 |
| 11 | Mario Andretti | Alfa Romeo | 13 | 40 | Engine | — | 0 |
| 12 | Derek Daly | March | 19 | 36 | Gearbox | — | 0 |
| 13 | Patrick Tambay | Ligier | 15 | 22 | Puncture | — | 0 |
| 14 | Nigel Mansell | Team Lotus | 12 | 21 | Suspension | — | 0 |
| 15 | John Watson | McLaren | 7 | 19 | Accident | — | 0 |
| 16 | Riccardo Patrese | Arrows | 20 | 18 | Gearbox | — | 0 |
| 17 | Michele Alboreto | Tyrrell | 22 | 17 | Accident | — | 0 |
| 18 | Eliseo Salazar | Ensign | 24 | 13 | Spun off | — | 0 |
| 19 | René Arnoux | Renault | 1 | 12 | Spun off | — | 0 |
| 20 | Jacques Laffite | Ligier | 4 | 11 | Puncture | — | 0 |
| 21 | Eddie Cheever | Tyrrell | 17 | 11 | Spun off | — | 0 |
| 22 | Slim Borgudd | ATS | 21 | 10 | Spun off | — | 0 |
| 23 | Gilles Villeneuve | Ferrari | 9 | 5 | Engine | — | 0 |
| 24 | Hector Rebaque | Brabham | 14 | 1 | Electrical | — | 0 |