Ronnie Peterson won the Italian Grand Prix 1973 at Autodromo Nazionale di Monza on 9 September 1973, starting from pole position. Emerson Fittipaldi finished second for Team Lotus, with Peter Revson completing the podium for McLaren.
| Pos | Grid | Driver | Team | Laps | Time / Status | Pts | FL |
|---|---|---|---|---|---|---|---|
| 1 | 1 | Ronnie PetersonPET | Team Lotus | 55 | 1:29:17.0 | 9 | |
| 2 | 4 | Emerson FittipaldiFIT | Team Lotus | 55 | +0.8 | 6 | |
| 3 | 2 | Peter RevsonREV | McLaren | 55 | +28.8 | 4 | |
| 4 | 6 | Jackie StewartSTE | Tyrrell | 55 | +33.2 | 3 | |
| 5 | 11 | François CevertCEV | Tyrrell | 55 | +46.2 | 2 | |
| 6 | 10 | Carlos ReutemannREU | Brabham | 55 | +59.8 | 1 | |
| 7 | 8 | Mike HailwoodHAI | Surtees | 55 | +1:28.7 | 0 | |
| 8 | 14 | Jacky IckxICK | Ferrari | 54 | +1 Lap | 0 | |
| 9 | 24 | David PurleyPUR | March | 54 | +1 Lap | 0 | |
| 10 | 21 | George FollmerFOL | Shadow | 54 | +1 Lap | 0 | |
| 11 | 19 | Jackie OliverOLI | Shadow | 54 | +1 Lap | 0 | |
| 12 | 9 | Rolf StommelenSTO | Brabham | 54 | +1 Lap | 0 | |
| 13 | 13 | Jean-Pierre BeltoiseBEL | BRM | 54 | +1 Lap | 0 | |
| 14 | 22 | Graham HillHIL | Shadow | 54 | +1 Lap | 0 | |
| 15 | 3 | Denny HulmeHUL | McLaren | 53 | +2 Laps | 0 | |
| N | 20 | Howden GanleyGAN | Iso Marlboro | 44 | Not classified | 0 | |
| R | 12 | Mike BeuttlerBEU | March | 34 | Gearbox | 0 | |
| R | 15 | Niki LaudaLAU | BRM | 33 | Accident | 0 | |
| R | 18 | Clay RegazzoniREG | BRM | 30 | Ignition | 0 | |
| R | 5 | Carlos PacePAC | Surtees | 17 | Tyre | 0 | |
| R | 23 | Gijs van LennepVAN | Iso Marlboro | 14 | Overheating | 0 | |
| R | 17 | Rikky von OpelVON | Ensign | 10 | Overheating | 0 | |
| R | 16 | Wilson FittipaldiFIT | Brabham | 6 | Brakes | 0 | |
| R | 7 | Arturo MerzarioMER | Ferrari | 2 | Suspension | 0 | |
| W | 0 | James HuntHUN | March | 0 | Accident | 0 |