The 1991 San Marino Grand Prix was Round 3 of the 1991 FIA Formula 1 World Championship. The event was held in Imola, Italy on Sunday, 28 April 1991. Ayrton Senna started on pole position in the McLaren Honda and was the race winner.
1991 San Marino 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 | 61 | 1:35:16.750 | 1:35:14.750 | - | - | 1:27.168 | 47 | 193.671 | 1 | 10 |
| 2 | 2 | Gerhard Berger | Austria | McLaren Honda | Goodyear | 61 | +1.675 | 1:35:16.425 | +1.675 | +1.675 | 1:26.531 | 55 | 193.614 | 5 | 6 |
| 3 | 22 | JJ Lehto | Finland | Dallara Judd | Pirelli | 60 | +1 lap | 1:36:46.651 | 1 lap | 1 lap | 1:29.091 | 40 | 187.481 | 16 | 4 |
| 4 | 23 | Pierluigi Martini | Italy | Minardi Ferrari | Goodyear | 59 | +2 lap | 1:36:33.968 | 2 laps | 1 lap | 1:30.476 | 33 | 184.760 | 9 | 3 |
| 5 | 11 | Mika Häkkinen | Finland | Lotus Judd | Goodyear | 58 | +3 laps | 1:35:34.589 | 3 laps | 1 lap | 1:30.481 | 56 | 183.509 | 25 | 2 |
| 6 | 12 | Julian Bailey | Great Britain | Lotus Judd | Goodyear | 58 | +3 laps | 1:35:35.437 | 3 laps | +0.848 | 1:29.968 | 58 | 183.482 | 26 | 1 |
| 7 | 25 | Thierry Boutsen | Belgium | Ligier Lamborghini | Goodyear | 58 | +3 laps | 1:36:22.658 | 3 laps | +47.221 | 1:29.368 | 48 | 181.984 | 24 | |
| 8 | 8 | Mark Blundell | Great Britain | Brabham Yamaha | Pirelli | 58 | +3 laps | 1:36:42.842 | 3 laps | +20.184 | 1:31.442 | 53 | 181.351 | 23 | |
| 9 | 35 | Eric van de Poele | Belgium | Lambo Lamborghini | Goodyear | 57 | Out of fuel | 1:33:59.220 | 4 laps | 1 lap | 1:30.528 | 50 | 183.395 | 21 | |
| 10 | 26 | Érik Comas | France | Ligier Lamborghini | Goodyear | 57 | +4 laps | 1:35:25.271 | 4 laps | +1:26.051 | 1:31.860 | 42 | 180.639 | 19 | |
| 11 | 7 | Martin Brundle | Great Britain | Brabham Yamaha | Pirelli | 57 | +4 laps | 1:36:02.010 | 4 laps | +36.739 | 1:30.115 | 50 | 179.487 | 18 | |
| 12 | 15 | Maurício Gugelmin | Brazil | Leyton House Ilmor | Goodyear | 55 | Engine | 1:31:48.908 | 6 laps | 2 laps | 1:30.422 | 46 | 181.146 | 15 | |
| 13 | 19 | Roberto Moreno | Brazil | Benetton Ford | Pirelli | 54 | Engine | 1:27:41.975 | 7 laps | 1 lap | 1:28.423 | 44 | 186.199 | 13 | |
| DNF | 4 | Stefano Modena | Italy | Tyrrell Honda | Pirelli | 41 | Transmission | 1:07:16.313 | 1:28.906 | 40 | 184.302 | 6 | |||
| DNF | 33 | Andrea de Cesaris | Italy | Jordan Ford | Goodyear | 37 | Gearbox | 1:02:29.654 | 1:30.471 | 28 | 179.037 | 11 | |||
| DNF | 32 | Bertrand Gachot | France | Jordan Ford | Goodyear | 37 | Suspension | 1:06:11.437 | 1:33.534 | 28 | 169.039 | 13 | |||
| DNF | 16 | Ivan Capelli | Italy | Leyton House Ilmor | Goodyear | 24 | Spun Off | 42:27.296 | 1:31.257 | 24 | 170.948 | 22 | |||
| DNF | 29 | Éric Bernard | France | Lola Ford | Goodyear | 17 | Engine | 32:19.729 | 1:33.555 | 17 | 159.016 | 17 | |||
| DNF | 6 | Riccardo Patrese | Italy | Williams Renault | Goodyear | 17 | Electrical | 37:38.035 | 1:28.776 | 16 | 136.600 | 2 | |||
| DNF | 3 | Satoru Nakajima | Japan | Tyrrell Honda | Pirelli | 15 | Transmission | 27:53.012 | 1:44.827 | 15 | 162.676 | 10 | |||
| DNF | 24 | Gianni Morbidelli | Italy | Minardi Ferrari | Goodyear | 10 | Gearbox | 19:27.824 | 1:50.522 | 10 | 155.365 | 8 | |||
| DNF | 28 | Jean Alesi | France | Ferrari | Goodyear | 2 | Spun Off | 4:01.923 | 1:55.709 | 2 | 149.998 | 7 | |||
| DNF | 30 | Aguri Suzuki | Japan | Lola Ford | Goodyear | 2 | Spun Off | 4:25.839 | 2:01.658 | 2 | 136.503 | 20 | |||
| DNF | 20 | Nelson Piquet | Brazil | Benetton Ford | Pirelli | 1 | Spun Off | 2:21.555 | 2:21.555 | 1 | 128.176 | 14 | |||
| DNF | 5 | Nigel Mansell | Great Britain | Williams Renault | Goodyear | Collsion | 4 | ||||||||
| DNS | 27 | Alain Prost | France | Ferrari | Goodyear | Spun Off | 3 | ||||||||
| DNQ | 17 | Gabriele Tarquini | Italy | AGS Ford | Goodyear | ||||||||||
| DNQ | 18 | Fabrizio Barbazza | Italy | AGS Ford | Goodyear | ||||||||||
| DNQ | 10 | Alex Caffi | Italy | Footwork Porsche | Goodyear | ||||||||||
| DNQ | 9 | Michele Alboreto | Italy | Footwork Porsche | Goodyear | ||||||||||
| DNPQ | 21 | Emanuele Pirro | Italy | Dallara Judd | Pirelli | ||||||||||
| DNPQ | 14 | Olivier Grouillard | France | Fondmetal Ford | Goodyear | ||||||||||
| DNPQ | 34 | Nicola Larini | Italy | Lambo Lamborghini | Goodyear | ||||||||||
| DNPQ | 13 | Pedro Chaves | Portugal | Coloni Ford | Goodyear |