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