| «1985-04» | Monaco Grand Prix - XLIII Grand Prix Automobile de Monaco |
| 1985-05-19 | Monaco - 78 laps × 3.312 km : 258.336 km |
| Pos | Grid | Car | Driver | Constructor | Laps | Time / Gap | Interval | Points |
|---|---|---|---|---|---|---|---|---|
| 1 | 5 | 2 | Alain Prost | McLaren • TAG Porsche | 78 | 1:51:58.034 | 138.435 km/h | 9 |
| 2 | 3 | 27 | Michele Alboreto | Ferrari | 78 | +07.541 | +07.541 | 6 |
| 3 | 9 | 11 | Elio de Angelis | Lotus • Renault | 78 | +01:27.171 | +01:19.630 | 4 |
| 4 | 8 | 25 | Andrea de Cesaris | Ligier • Renault | 77 | +1 lap | 3 | |
| 5 | 10 | 16 | Derek Warwick | Renault | 77 | +1 lap | 2 | |
| 6 | 16 | 26 | Jacques Laffite | Ligier • Renault | 77 | +1 lap | 1 | |
| 7 | 2 | 5 | Nigel Mansell | Williams • Honda | 77 | +1 lap | ||
| 8 | 7 | 6 | Keke Rosberg | Williams • Honda | 76 | +2 laps | ||
| 9 | 6 | 18 | Thierry Boutsen | Arrows • BMW | 76 | +2 laps | ||
| 10 | 18 | 3 | Martin Brundle | Tyrrell • Ford Cosworth | 74 | +4 laps | ||
| 11 | 19 | 30 | Jonathan Palmer | Zakspeed | 74 | +4 laps | ||
| 14 | 1 | Niki Lauda | McLaren • TAG Porsche | 17 | spin | |||
| 12 | 22 | Riccardo Patrese | Alfa Romeo | 16 | collision | |||
| 13 | 7 | Nelson Piquet | Brabham • BMW | 16 | collision | |||
| 20 | 19 | Teo Fabi | Toleman • Hart | 16 | turbo | |||
| 1 | 12 | Ayrton Senna | Lotus • Renault | 13 | engine | |||
| 4 | 23 | Eddie Cheever | Alfa Romeo | 10 | alternator | |||
| 15 | 28 | Stefan Johansson | Ferrari | 1 | suspension | |||
| 17 | 15 | Patrick Tambay | Renault | 0 | collision | |||
| 11 | 17 | Gerhard Berger | Arrows • BMW | 0 | collision | |||
| DNQ | 24 | Piercarlo Ghinzani | Osella • Alfa Romeo | |||||
| DNQ | 4 | Stefan Bellof | Tyrrell • Ford Cosworth | |||||
| DNQ | 10 | Philippe Alliot | RAM • Hart | |||||
| DNQ | 9 | Manfred Winkelhock | RAM • Hart | |||||
| DNQ | 8 | François Hesnault | Brabham • BMW | |||||
| DNQ | 29 | Pierluigi Martini | Minardi • Motori Moderni | accident |
Fastest lap - 01:22.637 - 144.284 km/h - Michele Alboreto (lap 60)