The 1985 Italian Grand Prix was Round 12 of the 1985 FIA Formula 1 World Championship. The event was held at Monza, Italy on Sunday, 8 September 1985. Ayrton Senna started on pole position in the Lotus Renault and Alain Prost was the race winner in the McLaren TAG.
56. Gran Premio D'Italia Race Result
| Pos. | No. | Driver | Nationality | Team | Tyre | Laps | Time/Retired | Race Time | Gap | Interval | Best Lap | Lap | Started | Points |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 2 | Alain Prost | France | McLaren TAG | Goodyear | 51 | 1:17:59.451 | 1:17:59.451 | - | - | 1:29.714 | 27 | 5 | 9 |
| 2 | 7 | Nelson Piquet | Brazil | Brabham BMW | Pirelli | 51 | +51.635 | 1:18:51.086 | +51.635 | +51.635 | 1:30.436 | 36 | 4 | 6 |
| 3 | 12 | Ayrton Senna | Brazil | Lotus Renault | Goodyear | 51 | +1:00.390 | 1:18:59.841 | +1:00.390 | +8.755 | 1:31.703 | 43 | 1 | 4 |
| 4 | 8 | Marc Surer | Switzerland | Brabham BMW | Pirelli | 51 | +1:00.609 | 1:19:00.060 | +1:00.609 | +0.219 | 1:30.935 | 48 | 9 | 3 |
| 5 | 28 | Stefan Johansson | Sweden | Ferrari | Goodyear | 50 | +1 lap | 1 lap | 1 lap | 1:30.795 | 48 | 10 | 2 | |
| 6 | 11 | Elio de Angelis | Italy | Lotus Renault | Goodyear | 50 | +1 lap | 1 lap | 1:31.896 | 10 | 6 | 1 | ||
| 7 | 15 | Patrick Tambay | France | Renault | Goodyear | 50 | +1 lap | 1 lap | 1:31.745 | 43 | 8 | |||
| 8 | 3 | Martin Brundle | Great Britain | Tyrrell Renault | Goodyear | 50 | +1 lap | 1 lap | 1:33.418 | 20 | 18 | |||
| 9 | 18 | Thierry Boutsen | Belgium | Arrows BMW | Goodyear | 50 | +1 lap | 1 lap | 1:32.820 | 29 | 14 | |||
| 10 | 25 | Philippe Streiff | France | Ligier Renault | Pirelli | 49 | +2 laps | 2 laps | 1 lap | 1:33.575 | 35 | 19 | ||
| 11 | 5 | Nigel Mansell | Great Britain | Williams Honda | Goodyear | 47 | Engine | 4 laps | 2 laps | 1:28.283 | 38 | 3 | ||
| 12 | 19 | Teo Fabi | Italy | Toleman Hart | Pirelli | 47 | +4 laps | 4 laps | 1:33.864 | 24 | 15 | |||
| 13 | 27 | Michele Alboreto | Italy | Ferrari | Goodyear | 45 | Engine | 6 laps | 2 laps | 1:30.163 | 45 | 7 | ||
| DNF | 6 | Keke Rosberg | Finland | Williams Honda | Goodyear | 44 | Engine | 7 laps | 1 lap | 1:28.421 | 39 | 2 | ||
| DNF | 26 | Jacques Laffite | France | Ligier Renault | Pirelli | 40 | Engine | 11 laps | 4 laps | 1:32.448 | 27 | 20 | ||
| DNF | 1 | Niki Lauda | Austria | McLaren TAG | Goodyear | 33 | Transmission | 18 laps | 7 laps | 1:29.998 | 30 | 16 | ||
| DNF | 22 | Riccardo Patrese | Italy | Alfa Romeo | Goodyear | 31 | Exhaust | 20 laps | 2 laps | 1:34.784 | 24 | 13 | ||
| DNF | 24 | Huub Rothengatter | Netherlands | Osella Alfa Romeo | Pirelli | 26 | Engine | 25 laps | 5 laps | 1:37.585 | 18 | 22 | ||
| DNF | 9 | Philippe Alliot | France | RAM Hart | Pirelli | 19 | Turbo | 32 laps | 7 laps | 1:35.308 | 18 | 26 | ||
| DNF | 17 | Gerhard Berger | Austria | Arrows BMW | Goodyear | 13 | Engine | 38 laps | 6 laps | 1:36.425 | 6 | 11 | ||
| DNF | 16 | Derek Warwick | Great Britain | Renault | Goodyear | 9 | Transmission | 42 laps | 4 laps | 1:33.330 | 5 | 12 | ||
| DNF | 33 | Alan Jones | Australia | Lola Hart | Goodyear | 6 | Engine | 45 laps | 3 laps | 1:36.536 | 6 | 25 | ||
| DNF | 23 | Eddie Cheever | United States | Alfa Romeo | Goodyear | 3 | Engine | 48 laps | 3 laps | 1:36.311 | 3 | 17 | ||
| DNF | 10 | Kenny Acheson | Great Britain | RAM Hart | Pirelli | 2 | Fuel Pump | 49 laps | 1 lap | 2:14.092 | 1 | 24 | ||
| DNF | 29 | Pierluigi Martini | Italy | Minardi Motori Moderni | Pirelli | 51 laps | 2 laps | 23 | ||||||
| DNS | 20 | Piercarlo Ghinzani | Italy | Toleman Hart | Pirelli | 51 laps | 21 |