Circuit de Barcelona-Catalunya · 29 September 1991
Nigel Mansell won the 1991 Spanish Grand Prix for Williams from 2nd on the grid, 11.331s ahead of Alain Prost. Alex Zanardi gained the most places, from 20th on the grid to 9th.
| Pos | Team | Points Breakdown | Pts | |
|---|---|---|---|---|
| 1 | Williams Mansell 10 + Patrese 4 | Mansell 10 + Patrese 4 | 14 | |
| 2 | Ferrari Prost 6 + Alesi 3 | Prost 6 + Alesi 3 | 9 | |
| 3 | McLaren Senna 2 + Berger 0 | Senna 2 + Berger 0 | 2 | |
| 4 | Benetton Schumacher 1 + Piquet 0 | Schumacher 1 + Piquet 0 | 1 | |
| 5 | Leyton House Gugelmin 0 + Capelli 0 | Gugelmin 0 + Capelli 0 | 0 | |
| 6 | Dallara Järvilehto 0 + Pirro 0 | Järvilehto 0 + Pirro 0 | 0 | |
| 7 | Jordan Zanardi 0 + de Cesaris 0 | Zanardi 0 + de Cesaris 0 | 0 | |
| 8 | Brabham Brundle 0 + Blundell 0 | Brundle 0 + Blundell 0 | 0 | |
| 9 | Fondmetal Tarquini 0 | Tarquini 0 | 0 | |
| 10 | Minardi Martini 0 + Morbidelli 0 | Martini 0 + Morbidelli 0 | 0 | |
| 11 | Tyrrell Modena 0 + Nakajima 0 | Modena 0 + Nakajima 0 | 0 | |
| 12 | Ligier Comas 0 + Boutsen 0 | Comas 0 + Boutsen 0 | 0 | |
| 13 | Footwork Alboreto 0 | Alboreto 0 | 0 | |
| 14 | Team Lotus Häkkinen 0 | Häkkinen 0 | 0 | |
| 15 | Lola Bernard 0 | Bernard 0 | 0 |
| Pos | Driver | Team | Race time / Gap | Laps | Stops | Pts | |
|---|---|---|---|---|---|---|---|
| 1 | Nigel Mansell Williams | Williams | 1:38:41.541 | 65 | — | 10 | |
| 2 | Alain Prost Ferrari | Ferrari | +11.331s | 65 | — | 6 | |
| 3 | Riccardo Patrese Williams | Williams | +15.909s | 65 | — | 4 | |
| 4 | Jean Alesi Ferrari | Ferrari | +22.772s | 65 | — | 3 | |
| 5 | Ayrton Senna McLaren | McLaren | +1:02.402 | 65 | — | 2 | |
| 6 | Michael Schumacher Benetton | Benetton | +1:19.468 | 65 | — | 1 | |
| 7 | Maurício Gugelmin Leyton House | Leyton House | +1 Lap | 64 | — | — | |
| 8 | Jyrki Järvilehto Dallara | Dallara | +1 Lap | 64 | — | — | |
| 9 | Alex Zanardi Jordan | Jordan | +1 Lap | 64 | — | — | |
| 10 | Martin Brundle Brabham | Brabham | +2 Laps | 63 | — | — | |
| 11 | Nelson Piquet Benetton | Benetton | +2 Laps | 63 | — | — | |
| 12 | Gabriele Tarquini Fondmetal | Fondmetal | +2 Laps | 63 | — | — | |
| 13 | Pierluigi Martini Minardi | Minardi | +2 Laps | 63 | — | — | |
| 14 | Gianni Morbidelli Minardi | Minardi | DNF Collision | 62 | — | — | |
| 15 | Emanuele Pirro Dallara | Dallara | +3 Laps | 62 | — | — | |
| 16 | Stefano Modena Tyrrell | Tyrrell | +3 Laps | 62 | — | — | |
| 17 | Satoru Nakajima Tyrrell | Tyrrell | +3 Laps | 62 | — | — | |
| DNF | Mark Blundell Brabham | Brabham | DNF Engine | 49 | — | — | |
| DNF | Érik Comas Ligier | Ligier | DNF Electrical | 36 | — | — | |
| DNF | Gerhard Berger McLaren | McLaren | DNF Electrical | 33 | — | — | |
| DNF | Michele Alboreto Footwork | Footwork | DNF Engine | 23 | — | — | |
| DNF | Andrea de Cesaris Jordan | Jordan | DNF Electrical | 22 | — | — | |
| DNF | Mika Häkkinen Team Lotus | Team Lotus | DNF Spun off | 5 | — | — | |
| DNF | Ivan Capelli Leyton House | Leyton House | DNF Collision | 1 | — | — | |
| DNF | Éric Bernard Lola | Lola | DNF Collision | 0 | — | — | |
| DNF | Thierry Boutsen Ligier | Ligier | DNF Collision | 0 | — | — |