Round 4 · 1991
Monaco Grand Prix
Circuit de Monaco, Monaco · Sun 12 May · 00:00 UTC
Race
| Pos | Driver | Team | Grid | Time / Status | Points |
|---|---|---|---|---|---|
| 1 | Ayrton Senna | McLaren | 1 | 1:53:02.334 | 10 |
| 2 | Nigel Mansell | Williams | 5 | +18.348 | 6 |
| 3 | Jean Alesi | Ferrari | 9 | +47.455 | 4 |
| 4 | Roberto Moreno | Benetton | 8 | +1 Lap | 3 |
| 5 | Alain Prost | Ferrari | 7 | +1 Lap | 2 |
| 6 | Emanuele Pirro | Dallara | 12 | +1 Lap | 1 |
| 7 | Thierry Boutsen | Ligier | 16 | +2 Laps | |
| 8 | Bertrand Gachot | Jordan | 23 | +2 Laps | |
| 9 | Éric Bernard | Lola | 13 | +2 Laps | |
| 10 | Érik Comas | Ligier | 26 | +2 Laps | |
| 11 | Jyrki Järvilehto | Dallara | 21 | +3 Laps | |
| 12 | Pierluigi Martini | Minardi | 14 | +6 Laps | |
| — | Mika Häkkinen | Lotus-Borgward | 25 | Oil leak | |
| — | Gianni Morbidelli | Minardi | 17 | Gearbox | |
| — | Maurício Gugelmin | Leyton House | 15 | Throttle | |
| — | Stefano Modena | Tyrrell | 2 | Engine | |
| — | Riccardo Patrese | Williams | 3 | Spun off | |
| — | Mark Blundell | Brabham | 19 | Spun off | |
| — | Michele Alboreto | Footwork | 22 | Engine | |
| — | Satoru Nakajima | Tyrrell | 11 | Spun off | |
| — | Aguri Suzuki | Lola | 20 | Engine | |
| — | Andrea de Cesaris | Jordan | 10 | Throttle | |
| — | Ivan Capelli | Leyton House | 18 | Brakes | |
| — | Gabriele Tarquini | AGS | 24 | Gearbox | |
| — | Gerhard Berger | McLaren | 6 | Spun off | |
| — | Nelson Piquet | Benetton | 4 | Suspension |