| «1991-04» | Monaco Grand Prix - XLIX Grand Prix Automobile de Monaco |
| 1991-05-12 | Monaco - 78 laps × 3.328 km : 259.584 km |
| Pos | Car | Driver | Constructor | Time | Speed | Lap | Gap |
|---|---|---|---|---|---|---|---|
| 1 | 27 | Alain Prost | Ferrari | 01:24.368 | 142.006 km/h | 77 | |
| 2 | 5 | Nigel Mansell | Williams • Renault | 01:24.850 | 141.200 km/h | 53 | +00.482 |
| 3 | 6 | Riccardo Patrese | Williams • Renault | 01:25.147 | 140.707 km/h | 34 | +00.779 |
| 4 | 2 | Gerhard Berger | McLaren • Honda | 01:25.228 | 140.574 km/h | 6 | +00.860 |
| 5 | 1 | Ayrton Senna | McLaren • Honda | 01:25.250 | 140.537 km/h | 32 | +00.882 |
| 6 | 4 | Stefano Modena | Tyrrell • Honda | 01:25.629 | 139.915 km/h | 34 | +01.261 |
| 7 | 19 | Roberto Moreno | Benetton • Ford Cosworth | 01:25.823 | 139.599 km/h | 31 | +01.455 |
| 8 | 28 | Jean Alesi | Ferrari | 01:26.055 | 139.223 km/h | 51 | +01.687 |
| 9 | 33 | Andrea de Cesaris | Jordan • Ford Cosworth | 01:26.257 | 138.897 km/h | 10 | +01.889 |
| 10 | 11 | Mika Hakkinen | Lotus • Judd | 01:26.627 | 138.303 km/h | 64 | +02.259 |
| 11 | 21 | Emanuele Pirro | Dallara • Judd | 01:26.924 | 137.831 km/h | 52 | +02.556 |
| 12 | 32 | Bertrand Gachot | Jordan • Ford Cosworth | 01:27.163 | 137.453 km/h | 64 | +02.795 |
| 13 | 26 | Erik Comas | Ligier • Lamborghini | 01:27.304 | 137.231 km/h | 40 | +02.936 |
| 14 | 22 | JJ Lehto | Dallara • Judd | 01:27.541 | 136.859 km/h | 41 | +03.173 |
| 15 | 29 | Eric Bernard | Lola • Ford Cosworth | 01:27.624 | 136.730 km/h | 64 | +03.256 |
| 16 | 8 | Mark Blundell | Brabham • Yamaha | 01:27.641 | 136.703 km/h | 33 | +03.273 |
| 17 | 3 | Satoru Nakajima | Tyrrell • Honda | 01:27.740 | 136.549 km/h | 11 | +03.372 |
| 18 | 23 | Pierluigi Martini | Minardi • Ferrari | 01:27.740 | 136.549 km/h | 49 | +03.372 |
| 19 | 25 | Thierry Boutsen | Ligier • Lamborghini | 01:27.787 | 136.476 km/h | 71 | +03.419 |
| 20 | 15 | Mauricio Gugelmin | Leyton House • Ilmor | 01:28.012 | 136.127 km/h | 37 | +03.644 |
| 21 | 24 | Gianni Morbidelli | Minardi • Ferrari | 01:28.648 | 135.150 km/h | 37 | +04.280 |
| 22 | 30 | Aguri Suzuki | Lola • Ford Cosworth | 01:28.661 | 135.130 km/h | 6 | +04.293 |
| 23 | 16 | Ivan Capelli | Leyton House • Ilmor | 01:28.803 | 134.914 km/h | 4 | +04.435 |
| 24 | 17 | Gabriele Tarquini | AGS • Ford Cosworth | 01:29.711 | 133.549 km/h | 7 | +05.343 |
| 25 | 9 | Michele Alboreto | Footwork • Porsche | 01:30.366 | 132.581 km/h | 6 | +05.998 |