| «1981-13» | Italy Grand Prix - LII Gran Premio d'Italia |
| 1981-09-13 | Monza - Autodromo Nazionale di Monza - 52 laps × 5.8 km : 301.6 km |
| Pos | Grid | Car | Driver | Constructor | Time | Gap | Interval |
|---|---|---|---|---|---|---|---|
| 1 | 1 | 16 | René Arnoux | Renault | 01:33.467 | 223.394 km/h | |
| 2 | 2 | 2 | Carlos Reutemann | Williams • Ford Cosworth | 01:34.140 | +00.673 (+0.720%) | +00.673 |
| 3 | 3 | 15 | Alain Prost | Renault | 01:34.374 | +00.907 (+0.970%) | +00.234 |
| 4 | 4 | 26 | Jacques Laffite | Ligier • Matra | 01:35.062 | +01.595 (+1.706%) | +00.688 |
| 5 | 5 | 1 | Alan Jones | Williams • Ford Cosworth | 01:35.359 | +01.892 (+2.024%) | +00.297 |
| 6 | 6 | 5 | Nelson Piquet | Brabham • Ford Cosworth | 01:35.449 | +01.982 (+2.121%) | +00.090 |
| 7 | 7 | 7 | John Watson | McLaren • Ford Cosworth | 01:35.557 | +02.090 (+2.236%) | +00.108 |
| 8 | 8 | 28 | Didier Pironi | Ferrari | 01:35.596 | +02.129 (+2.278%) | +00.039 |
| 9 | 9 | 27 | Gilles Villeneuve | Ferrari | 01:35.627 | +02.160 (+2.311%) | +00.031 |
| 10 | 10 | 23 | Bruno Giacomelli | Alfa Romeo | 01:35.946 | +02.479 (+2.652%) | +00.319 |
| 11 | 11 | 11 | Elio de Angelis | Lotus • Ford Cosworth | 01:36.158 | +02.691 (+2.879%) | +00.212 |
| 12 | 12 | 12 | Nigel Mansell | Lotus • Ford Cosworth | 01:36.210 | +02.743 (+2.935%) | +00.052 |
| 13 | 13 | 22 | Mario Andretti | Alfa Romeo | 01:36.296 | +02.829 (+3.027%) | +00.086 |
| 14 | 14 | 6 | Hector Rebaque | Brabham • Ford Cosworth | 01:36.472 | +03.005 (+3.215%) | +00.176 |
| 15 | 15 | 25 | Patrick Tambay | Ligier • Matra | 01:36.515 | +03.048 (+3.261%) | +00.043 |
| 16 | 16 | 8 | Andrea de Cesaris | McLaren • Ford Cosworth | 01:37.019 | +03.552 (+3.800%) | +00.504 |
| 17 | 17 | 3 | Eddie Cheever | Tyrrell • Ford Cosworth | 01:37.160 | +03.693 (+3.951%) | +00.141 |
| 18 | 18 | 32 | Jean-Pierre Jarier | Osella • Ford Cosworth | 01:37.264 | +03.797 (+4.062%) | +00.104 |
| 19 | 19 | 17 | Derek Daly | March • Ford Cosworth | 01:37.309 | +03.842 (+4.111%) | +00.045 |
| 20 | 20 | 29 | Riccardo Patrese | Arrows • Ford Cosworth | 01:37.355 | +03.888 (+4.160%) | +00.046 |
| 21 | 21 | 9 | Slim Borgudd | ATS • Ford Cosworth | 01:37.807 | +04.340 (+4.643%) | +00.452 |
| 22 | 22 | 4 | Michele Alboreto | Tyrrell • Ford Cosworth | 01:37.912 | +04.445 (+4.756%) | +00.105 |
| 23 | 23 | 35 | Brian Henton | Toleman • Hart | 01:38.012 | +04.545 (+4.863%) | +00.100 |
| 24 | 24 | 14 | Eliseo Salazar | Ensign • Ford Cosworth | 01:38.053 | +04.586 (+4.907%) | +00.041 |
| 25 | 33 | Marc Surer | Theodore • Ford Cosworth | 01:38.114 | +04.647 (+4.972%) | +00.061 | |
| 26 | 31 | Beppe Gabbiani | Osella • Ford Cosworth | 01:38.474 | +05.007 (+5.357%) | +00.360 | |
| 27 | 36 | Derek Warwick | Toleman • Hart | 01:39.279 | +05.812 (+6.218%) | +00.805 | |
| 28 | 30 | Siegfried Stohr | Arrows • Ford Cosworth | 01:39.713 | +06.246 (+6.683%) | +00.434 | |
| 29 | 20 | Keke Rosberg | Fittipaldi • Ford Cosworth | 01:40.345 | +06.878 (+7.359%) | +00.632 | |
| 30 | 21 | Chico Serra | Fittipaldi • Ford Cosworth | 01:40.437 | +06.970 (+7.457%) | +00.092 |