The 1985 Monaco Grand Prix was Round 4 of the 1985 FIA Formula 1 World Championship. The event was held on the streets of Monte Carlo on Sunday, 19 May 1985. Ayrton Senna started on pole position in the Lotus Renault and Alain Prost was the race winner in the McLaren TAG.
43e Grand Prix Automobile De Monaco Race Result
| Pos. | No. | Driver | Nationality | Team | Tyre | Laps | Time/Retired | Race Time | Gap | Interval | Best Lap | Lap | Speed | Started | Points |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 2 | Alain Prost | France | McLaren TAG | Goodyear | 78 | 1:51:58.034 | 1:51:58.034 | - | - | 1:23.898 | 66 | 138.434 | 5 | 9 |
| 2 | 27 | Michele Alboreto | Italy | Ferrari | Goodyear | 78 | +7.541 | 1:52:05.575 | +7.541 | +7.541 | 1:22.637 | 60 | 138.279 | 3 | 6 |
| 3 | 11 | Elio de Angelis | Italy | Lotus Renault | Goodyear | 78 | +1:27.171 | 1:53:25.205 | +1:27.171 | +1:19.630 | 1:24.434 | 47 | 136.661 | 9 | 4 |
| 4 | 25 | Andrea de Cesaris | Italy | Ligier Renault | Pirelli | 77 | +1 lap | 1:52:01.642 | 1 lap | 1 lap | 1:24.554 | 58 | 136.586 | 8 | 3 |
| 5 | 16 | Derek Warwick | Great Britain | Renault | Goodyear | 77 | +1 lap | 1:52:36.128 | 1 lap | +34.486 | 1:25.305 | 42 | 135.889 | 10 | 2 |
| 6 | 26 | Jacques Laffite | France | Ligier Renault | Pirelli | 77 | +1 lap | 1:52:52.175 | 1 lap | +16.047 | 1:24.788 | 51 | 135.567 | 16 | 1 |
| 7 | 5 | Nigel Mansell | Great Britain | Williams Honda | Goodyear | 77 | +1 lap | 1:52:57.733 | 1 lap | +5.558 | 1:24.673 | 59 | 135.456 | 2 | |
| 8 | 6 | Keke Rosberg | Finland | Williams Honda | Goodyear | 76 | +2 laps | 1:52:01.857 | 2 laps | 1 lap | 1:24.617 | 62 | 134.808 | 7 | |
| 9 | 18 | Thierry Boutsen | Belgium | Arrows BMW | Goodyear | 76 | +2 laps | 1:53:27.633 | 2 laps | +1:25.776 | 1:25.631 | 43 | 133.109 | 6 | |
| 10 | 3 | Martin Brundle | Great Britain | Tyrrell Ford | Goodyear | 74 | +4 laps | 1:52:28.969 | 4 laps | 2 laps | 1:26.131 | 57 | 130.733 | 18 | |
| 11 | 30 | Jonathan Palmer | Great Britain | Zakspeed | Goodyear | 74 | +4 laps | 1:52:40.828 | 4 laps | +11.859 | 1:26.653 | 57 | 130.504 | 19 | |
| DNF | 1 | Niki Lauda | Austria | McLaren TAG | Goodyear | 17 | Spun Off | 25:08.486 | 1:25.842 | 16 | 134.369 | 14 | |||
| DNF | 22 | Riccardo Patrese | Italy | Alfa Romeo | Goodyear | 16 | Accident | 23:52.515 | 1:27.723 | 6 | 133.172 | 12 | |||
| DNF | 7 | Nelson Piquet | Brazil | Brabham BMW | Pirelli | 16 | Accident | 23:52.571 | 1:27.124 | 5 | 133.167 | 13 | |||
| DNF | 19 | Teo Fabi | Italy | Toleman Hart | Pirelli | 16 | Turbo | 23:53.709 | 1:26.717 | 9 | 133.061 | 20 | |||
| DNF | 12 | Ayrton Senna | Brazil | Lotus Renault | Goodyear | 13 | Engine | 18:43.098 | 1:24.803 | 7 | 138.012 | 1 | |||
| DNF | 23 | Eddie Cheever | United States | Alfa Romeo | Goodyear | 10 | Alternator | 20:42.463 | 1:26.548 | 10 | 95.964 | 4 | |||
| DNF | 28 | Stefan Johansson | Sweden | Ferrari | Goodyear | 1 | Accident | 2:31.095 | 2:31.095 | 1 | 78.911 | 15 | |||
| DNF | 17 | Gerhard Berger | Austria | Arrows BMW | Goodyear | Accident | 11 | ||||||||
| DNF | 15 | Patrick Tambay | France | Renault | Goodyear | Accident | 17 | ||||||||
| DNQ | 24 | Piercarlo Ghinzani | Italy | Osella Alfa Romeo | Pirelli | ||||||||||
| DNQ | 4 | Stefan Bellof | Germany | Tyrrell Ford | Goodyear | ||||||||||
| DNQ | 10 | Philippe Alliot | France | RAM Hart | Pirelli | ||||||||||
| DNQ | 9 | Manfred Winkelhock | Germany | RAM Hart | Pirelli | ||||||||||
| DNQ | 8 | Francois Hesnault | France | Brabham BMW | Pirelli | ||||||||||
| DNQ | 29 | Pierluigi Martini | Italy | Minardi Ford | Pirelli |