1991 United States Grand Prix
Grand Prix
| Position | Driver number | Driver | Constructor | Laps | Time | Grid | Points |
|---|---|---|---|---|---|---|---|
| 1 | 1 |  Ayrton Senna |
McLaren-Honda | G | 81 | 2:00:47.828 | 1 |
| 2 | 27 |  Alain Prost |
Ferrari | G | 81 | + 16.322 | 2 |
| 3 | 20 | Nelson Piquet |
Benetton-Ford | P | 81 | + 17.376 | 5 |
| 4 | 4 |  Stefano Modena |
Tyrrell-Honda | P | 81 | + 25.409 | 11 |
| 5 | 3 |  Satoru Nakajima |
Tyrrell-Honda | P | 80 | + 1 lap | 16 |
| 6 | 30 | Aguri Suzuki |
Lola-Ford | G | 79 | + 2 laps | 21 |
| 7 | 34 | Nicola Larini |
Lambo-Lamborghini | G | 78 | + 3 laps | 17 |
| 8 | 17 | Gabriele Tarquini |
AGS-Ford | G | 77 | + 4 laps | 22 |
| 9 | 23 | Pierluigi Martini |
Minardi-Ferrari | G | 75 | Engine | 15 |
| 10 | 32 |  Bertrand Gachot |
Jordan-Ford | G | 75 | Engine | 14 |
| 11 | 7 |  Martin Brundle |
Brabham-Yamaha | P | 73 | + 8 laps | 12 |
| 12 | 28 | Jean Alesi |
Ferrari | G | 72 | Gearbox | 6 |
Qualifying
| Position | Driver number | Driver | Constructor | Q1 | Q2 | Q3 | Grid |
|---|---|---|---|---|---|---|---|
| 1 | 1 | Ayrton Senna |
McLaren-Honda | 1:23.530 | 1:21.434 | undefined | |
| 2 | 27 | Alain Prost |
Ferrari | 1:24.507 | 1:22.555 | +1.121 | undefined |
| 3 | 6 | Riccardo Patrese |
Williams-Renault | 1:24.726 | 1:22.833 | +1.399 | undefined |
| 4 | 5 | Nigel Mansell |
Williams-Renault | 1:25.277 | 1:23.218 | +1.784 | undefined |
| 5 | 20 | Nelson Piquet |
Benetton-Ford | 1:25.026 | 1:23.384 | +1.950 | undefined |
| 6 | 28 | Jean Alesi |
Ferrari | 1:23.519 | 1:23.805 | +2.085 | undefined |
| 7 | 2 |  Gerhard Berger |
McLaren-Honda | 1:25.914 | 1:23.742 | +2.308 | undefined |
| 8 | 19 | Roberto Moreno |
Benetton-Ford | 1:25.170 | 1:23.881 | +2.447 | undefined |
| 9 | 21 | Emanuele Pirro |
Dallara-Judd | 1:24.876 | 1:24.792 | +3.358 | undefined |
| 10 | 22 |  JJ Lehto |
Dallara-Judd | 1:26.765 | 1:24.891 | +3.457 | undefined |
| 11 | 4 | Stefano Modena |
Tyrrell-Honda | 1:25.065 | 1:25.557 | +3.631 | undefined |
| 12 | 7 | Martin Brundle |
Brabham-Yamaha | 1:27.184 | 1:25.385 | +3.951 | undefined |
| 13 | 11 | Mika Häkkinen |
Lotus-Judd | 1:27.976 | 1:25.448 | +4.014 | undefined |
| 14 | 32 | Bertrand Gachot |
Jordan-Ford | 1:27.568 | 1:25.701 | +4.267 | undefined |
| 15 | 23 | Pierluigi Martini |
Minardi-Ferrari | 1:25.815 | 1:25.715 | +4.281 | undefined |
| 16 | 3 | Satoru Nakajima |
Tyrrell-Honda | 1:26.058 | 1:25.752 | +4.318 | undefined |
| 17 | 34 | Nicola Larini |
Lambo-Lamborghini | 1:27.761 | 1:25.791 | +4.357 | undefined |
| 18 | 16 | Ivan Capelli |
Leyton House-Ilmor | 1:54.845 | 1:26.121 | +4.687 | undefined |
| 19 | 29 | Éric Bernard |
Lola-Ford | 1:27.446 | 1:26.425 | +4.991 | undefined |
| 20 | 25 | Thierry Boutsen |
Ligier-Lamborghini | 1:27.984 | 1:26.500 | +5.066 | undefined |
| 21 | 30 | Aguri Suzuki |
Lola-Ford | 1:26.987 | 1:26.548 | +5.114 | undefined |
| 22 | 17 | Gabriele Tarquini |
AGS-Ford | 1:27.164 | 1:26.851 | +5.417 | undefined |
| 23 | 15 | Maurício Gugelmin |
Leyton House-Ilmor | 1:26.865 | 1:26.875 | +5.431 | undefined |
| 24 | 8 | Mark Blundell |
Brabham-Yamaha | 1:30.061 | 1:26.915 | +5.481 | undefined |
| 25 | 9 | Michele Alboreto |
Footwork-Porsche | 1:29.067 | 1:27.015 | +5.581 | undefined |
| 26 | 24 | Gianni Morbidelli |
Minardi-Ferrari | 1:27.625 | 1:27.042 | +5.608 | undefined |
| 27 | 26 | Érik Comas |
Ligier-Lamborghini | 1:28.904 | 1:27.159 | +5.725 | undefined |
| 28 | 10 | Alex Caffi |
Footwork-Porsche | 1:29.388 | 1:27.519 | +6.085 | undefined |
| 29 | 18 |  Stefan Johansson |
AGS-Ford | 1:29.857 | 1:27.753 | +6.319 | undefined |
| 30 | 12 | Julian Bailey |
Lotus-Judd | 1:30.758 | 1:28.570 | +7.136 | undefined |