The 1991 Monaco Grand Prix was Round 4 of the 1991 FIA Formula 1 World Championship. The event was held on the streets of Monte Carlo on Sunday, 12 May 1991. Ayrton Senna started on pole position in the McLaren Honda and was the race winner.
1991 Monaco Grand Prix Race Result
| Pos. | No. | Driver | Nationality | Team | Tyre | Laps | Time/Retired | Race Time | Gap | Interval | Best Lap | Lap | Speed | Started | Points |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 1 | Ayrton Senna | Brazil | McLaren Honda | Goodyear | 78 | 1:53:02.334 | 1:53:02.334 | - | - | 1:25.250 | 32 | 137.785 | 1 | 10 |
| 2 | 5 | Nigel Mansell | Great Britain | Williams Renault | Goodyear | 78 | +18.348 | 1:53:20.682 | +18.348 | +18.348 | 1:24.850 | 53 | 137.413 | 5 | 6 |
| 3 | 28 | Jean Alesi | France | Ferrari | Goodyear | 78 | +47.455 | 1:53:49.789 | +47.455 | +29.107 | 1:26.055 | 51 | 136.827 | 9 | 4 |
| 4 | 19 | Roberto Moreno | Brazil | Benetton Ford | Pirelli | 77 | +1 lap | 1:53:03.636 | 1 lap | 1 lap | 1:25.823 | 31 | 135.992 | 8 | 3 |
| 5 | 27 | Alain Prost | France | Ferrari | Goodyear | 77 | +1 lap | 1:53:09.799 | 1 lap | +6.163 | 1:24.368 | 77 | 135.868 | 7 | 2 |
| 6 | 21 | Emanuele Pirro | Italy | Dallara Judd | Pirelli | 77 | +1 lap | 1:54:41.162 | 1 lap | +1:31.363 | 1:26.924 | 52 | 134.064 | 12 | 1 |
| 7 | 25 | Thierry Boutsen | Belgium | Ligier Lamborghini | Goodyear | 76 | +2 laps | 1:53:25.907 | 2 laps | 1 lap | 1:27.787 | 71 | 133.786 | 16 | |
| 8 | 32 | Bertrand Gachot | France | Jordan Ford | Goodyear | 76 | +2 laps | 1:53:27.094 | 2 laps | +1.187 | 1:27.163 | 64 | 133.763 | 24 | |
| 9 | 29 | Éric Bernard | France | Lola Ford | Goodyear | 76 | +2 laps | 1:53:27.341 | 2 laps | +0.247 | 1:27.624 | 64 | 133.758 | 29 | |
| 10 | 26 | Érik Comas | France | Ligier Lamborghini | Goodyear | 76 | +2 laps | 1:54:41.287 | 2 laps | +1:13.946 | 1:27.304 | 40 | 132.321 | 23 | |
| 11 | 22 | JJ Lehto | Finland | Dallara Judd | Pirelli | 75 | +3 laps | 1:53:50.364 | 3 laps | 1 lap | 1:27.541 | 41 | 131.553 | 13 | |
| 12 | 23 | Pierluigi Martini | Italy | Minardi Ferrari | Goodyear | 72 | +6 laps | 1:54:55.119 | 6 laps | 3 laps | 1:27.740 | 49 | 125.105 | 14 | |
| DNF | 11 | Mika Häkkinen | Finland | Lotus Judd | Goodyear | 64 | Oil leak | 1:35:45.356 | 1:26.627 | 64 | 133.459 | 26 | |||
| DNF | 24 | Gianni Morbidelli | Italy | Minardi Ferrari | Goodyear | 49 | Gearbox | 1:13:41.194 | 1:28.648 | 41 | 132.782 | 17 | |||
| DNF | 15 | Maurício Gugelmin | Brazil | Leyton House Ilmor | Goodyear | 43 | Throttle | 1:04:24.643 | 1:28.012 | 37 | 133.304 | 15 | |||
| DNF | 4 | Stefano Modena | Italy | Tyrrell Honda | Pirelli | 42 | Engine | 1:00:50.444 | 1:25.629 | 34 | 137.844 | 2 | |||
| DNF | 6 | Riccardo Patrese | Italy | Williams Renault | Goodyear | 42 | Spun off | 1:00:51.745 | 1:25.147 | 34 | 137.795 | 3 | |||
| DNF | 8 | Mark Blundell | Great Britain | Brabham Yamaha | Pirelli | 41 | Spun off | 1:01:38.633 | 1:27.641 | 33 | 132.809 | 22 | |||
| DNF | 9 | Michele Alboreto | Italy | Footwork Porsche | Goodyear | 39 | Engine | 1:00:34.923 | 1:30.366 | 6 | 128.545 | 25 | |||
| DNF | 3 | Satoru Nakajima | Japan | Tyrrell Honda | Pirelli | 35 | Spun off | 51:54.417 | 1:27.740 | 11 | 134.640 | 11 | |||
| DNF | 30 | Aguri Suzuki | Japan | Lola Ford | Goodyear | 24 | Spun off | 36:14.988 | 1:28.661 | 6 | 132.202 | 19 | |||
| DNF | 33 | Andrea de Cesaris | Italy | Jordan Ford | Goodyear | 21 | Throttle | 30:48.050 | 1:26.257 | 10 | 136.141 | 10 | |||
| DNF | 16 | Ivan Capelli | Italy | Leyton House Ilmor | Goodyear | 12 | Brakes | 24:34.909 | 1:28.803 | 4 | 97.476 | 18 | |||
| DNF | 17 | Gabriele Tarquini | Italy | AGS Ford | Goodyear | 9 | Gearbox | 13:53.540 | 1:29.711 | 7 | 129.360 | 20 | |||
| DNF | 2 | Gerhard Berger | Austria | McLaren Honda | Goodyear | 9 | Spun off | 16:46.804 | 1:25.228 | 6 | 107.098 | 6 | |||
| DNF | 20 | Nelson Piquet | Brazil | Benetton Ford | Pirelli | Suspension | 4 | ||||||||
| DSQ | 7 | Martin Brundle | Great Britain | Brabham Yamaha | Pirelli | ||||||||||
| DNPQ | 34 | Nicola Larini | Italy | Lambo Lamborghini | Goodyear | ||||||||||
| DNPQ | 35 | Eric van de Poele | Belgium | Lambo Lamborghini | Goodyear | ||||||||||
| DNPQ | 13 | Pedro Chaves | Portugal | Coloni Ford | Goodyear | ||||||||||
| DNPQ | 14 | Olivier Grouillard | France | Fondmetal Ford | Goodyear |