Peter Gethin won the Italian Grand Prix 1971 at Autodromo Nazionale di Monza on 5 September 1971, starting from P11 on the grid. Ronnie Peterson finished second for March-Ford, with François Cevert completing the podium for Tyrrell.
| Pos | Grid | Driver | Team | Laps | Time / Status | Pts | FL |
|---|---|---|---|---|---|---|---|
| 1 | 11 | Peter GethinGET | BRM | 55 | 1:18:12.60 | 9 | |
| 2 | 6 | Ronnie PetersonPET | March-Ford | 55 | +0.01 | 6 | |
| 3 | 5 | François CevertCEV | Tyrrell | 55 | +0.09 | 4 | |
| 4 | 17 | Mike HailwoodHAI | Surtees | 55 | +0.18 | 3 | |
| 5 | 4 | Howden GanleyGAN | BRM | 55 | +0.61 | 2 | |
| 6 | 1 | Chris AmonAMO | Matra | 55 | +32.36 | 1 | |
| 7 | 13 | Jackie OliverOLI | McLaren | 55 | +1:24.83 | 0 | |
| 8 | 18 | Emerson FittipaldiFIT | Lotus-Pratt & Whitney | 54 | +1 Lap | 0 | |
| 9 | 3 | Jo SiffertSIF | BRM | 53 | +2 Laps | 0 | |
| 10 | 21 | Jo BonnierBON | McLaren | 51 | +4 Laps | 0 | |
| R | 14 | Graham HillHIL | Brabham | 47 | Gearbox | 0 | |
| N | 24 | Jean-Pierre JarierJAR | March-Ford | 47 | Not classified | 0 | |
| R | 16 | Mike BeuttlerBEU | March-Ford | 41 | Engine | 0 | |
| R | 10 | Henri PescaroloPES | March-Ford | 40 | Suspension | 0 | |
| R | 20 | Andrea de AdamichDEA | March-Alfa Romeo | 33 | Engine | 0 | |
| R | 8 | Clay RegazzoniREG | Ferrari | 17 | Engine | 0 | |
| R | 2 | Jacky IckxICK | Ferrari | 15 | Engine | 0 | |
| R | 7 | Jackie StewartSTE | Tyrrell | 15 | Engine | 0 | |
| R | 19 | Nanni GalliGAL | March-Ford | 11 | Electrical | 0 | |
| R | 9 | Tim SchenkenSCH | Brabham | 5 | Suspension | 0 | |
| R | 22 | Silvio MoserMOS | Bellasi | 5 | Suspension | 0 | |
| R | 12 | Helmut MarkoMAR | BRM | 3 | Engine | 0 | |
| R | 15 | John SurteesSUR | Surtees | 3 | Engine | 0 | |
| R | 23 | Rolf StommelenSTO | Surtees | 0 | Accident | 0 |