F1 pole positions
Polesitters
| # | Grand Prix | Circuit | Driver | Constructor | Race | Pole margin |
|---|---|---|---|---|---|---|
| 1 | USA | Phoenix | (BRA) Ayrton Senna | McLaren-Honda | 1 | 1.121s |
| 2 | Brazil | Interlagos | (BRA) Ayrton Senna | McLaren-Honda | 1 | 0.383s |
| 3 | San Marino | Imola | (BRA) Ayrton Senna | McLaren-Honda | 1 | 0.080s |
| 4 | Monaco | Monte Carlo | (BRA) Ayrton Senna | McLaren-Honda | 1 | 0.465s |
| 5 | Canada | Montreal | (ITA) Riccardo Patrese | Williams-Renault | 3 | 0.388s |
| 6 | Mexico | Mexico City | (ITA) Riccardo Patrese | Williams-Renault | 1 | 0.282s |
| 7 | France | Magny-Cours | (ITA) Riccardo Patrese | Williams-Renault | 5 | 0.230s |
| 8 | Britain | Silverstone | (GBR) Nigel Mansell | Williams-Renault | 1 | 0.679s |
| 9 | Germany | Hockenheim | (GBR) Nigel Mansell | Williams-Renault | 1 | 0.187s |
| 10 | Hungary | Hungaroring | (BRA) Ayrton Senna | McLaren-Honda | 1 | 1.232s |
| 11 | Belgium | Spa-Francorchamps | (BRA) Ayrton Senna | McLaren-Honda | 1 | 1.010s |
| 12 | Italy | Monza | (BRA) Ayrton Senna | McLaren-Honda | 2 | 0.133s |
| 13 | Portugal | Estoril | (ITA) Riccardo Patrese | Williams-Renault | 1 | 0.220s |
| 14 | Spain | Catalunya | (AUT) Gerhard Berger | McLaren-Honda | DNF | 0.219s |
| 15 | Japan | Suzuka | (AUT) Gerhard Berger | McLaren-Honda | 1 | 0.198s |
| 16 | Australia | Adelaide | (BRA) Ayrton Senna | McLaren-Honda | 1 | 0.344s |
- First pole position (drivers)
- No driver took their first pole position in 1991
- Last pole position (drivers)
- No driver took their last pole position in 1991
- First pole position (constructors)
- No constructor took their first pole position in 1991
- Last pole position (constructors)
- No constructor took their last pole position in 1991
- First pole position since…
- 1989 for Riccardo Patrese
- Last pole position until…
- 1994 for Gerhard Berger
- First pole position by a…
- Italian driver since 1989
- Last pole position by a…
- Austrian driver until 1994