MONACO GRAND PRIX - QUALIFYING 1
12 May 1991
Circuit de Monaco, Monaco
| Pos. | No. | Driver | Team | Time |
|---|---|---|---|---|
| 1 | 1 | Ayrton SennaSEN | McLaren Honda | 1:20.508 |
| 2 | 2 | Gerhard BergerBER | McLaren Honda | 1:21.222 |
| 3 | 6 | Riccardo PatresePAT | Williams Renault | 1:22.057 |
| 4 | 27 | Alain ProstPRO | Ferrari | 1:22.113 |
| 5 | 20 | Nelson PiquetPIQ | Benetton Ford | 1:22.816 |
| 6 | 28 | Jean AlesiALE | Ferrari | 1:22.966 |
| 7 | 22 | Jyrki JarvilehtoJAR | Dallara Judd | 1:23.023 |
| 8 | 5 | Nigel MansellMAN | Williams Renault | 1:23.274 |
| 9 | 21 | Emanuele PirroPIR | Dallara Judd | 1:23.311 |
| 10 | 4 | Stefano ModenaMOD | Tyrrell Honda | 1:23.442 |
| 11 | 19 | Roberto MorenoMOR | Benetton Ford | 1:23.476 |
| 12 | 23 | Pierluigi MartiniMAR | Minardi Ferrari | 1:24.101 |
| 13 | 33 | Andrea de CesarisDEC | Jordan Ford | 1:24.257 |
| 14 | 3 | Satoru NakajimaNAK | Tyrrell Honda | 1:24.435 |
| 15 | 24 | Gianni MorbidelliMOR | Minardi Ferrari | 1:24.481 |
| 16 | 32 | Bertrand GachotGAC | Jordan Ford | 1:24.540 |
| 17 | 25 | Thierry BoutsenBOU | Ligier Lamborghini | 1:24.728 |
| 18 | 26 | Erik ComasCOM | Ligier Lamborghini | 1:24.747 |
| 19 | 7 | Martin BrundleBRU | Brabham Yamaha | 1:24.840 |
| 20 | 11 | Mika HakkinenHAK | Lotus Judd | 1:24.868 |
| 21 | 15 | Mauricio GugelminGUG | Leyton House Ilmor | 1:24.920 |
| 22 | 16 | Ivan CapelliCAP | Leyton House Ilmor | 1:25.040 |
| 23 | 17 | Gabriele TarquiniTAR | AGS Ford | 1:25.078 |
| 24 | 29 | Eric BernardBER | Lola Ford | 1:25.370 |
| 25 | 8 | Mark BlundellBLU | Brabham Yamaha | 1:25.500 |
| 26 | 30 | Aguri SuzukiSUZ | Lola Ford | 1:26.380 |
| 27 | 9 | Michele AlboretoALB | Footwork Porsche | 1:27.843 |
| 28 | 18 | Fabrizio BarbazzaBAR | AGS Ford | 1:28.060 |
| 29 | 12 | Julian BaileyBAI | Lotus Judd | 1:28.772 |