Circuit Gilles Villeneuve · 2 June 1991
Nelson Piquet won the 1991 Canadian Grand Prix for Benetton from 8th on the grid, 31.832s ahead of Stefano Modena. Érik Comas gained the most places, from 26th on the grid to 8th.
| Pos | Team | Points Breakdown | Pts | |
|---|---|---|---|---|
| 1 | Benetton Piquet 10 + Moreno 0 | Piquet 10 + Moreno 0 | 10 | |
| 2 | Tyrrell Modena 6 + Nakajima 0 | Modena 6 + Nakajima 0 | 6 | |
| 3 | Williams Patrese 4 + Mansell 1 | Patrese 4 + Mansell 1 | 5 | |
| 4 | Jordan de Cesaris 3 + Gachot 2 | de Cesaris 3 + Gachot 2 | 5 | |
| 5 | Minardi Martini 0 + Morbidelli 0 | Martini 0 + Morbidelli 0 | 0 | |
| 6 | Ligier Comas 0 + Boutsen 0 | Comas 0 + Boutsen 0 | 0 | |
| 7 | Dallara Pirro 0 + Järvilehto 0 | Pirro 0 + Järvilehto 0 | 0 | |
| 8 | Leyton House Gugelmin 0 + Capelli 0 | Gugelmin 0 + Capelli 0 | 0 | |
| 9 | Footwork Johansson 0 + Alboreto 0 | Johansson 0 + Alboreto 0 | 0 | |
| 10 | Ferrari Alesi 0 + Prost 0 | Alesi 0 + Prost 0 | 0 | |
| 11 | Lola Bernard 0 + Suzuki 0 | Bernard 0 + Suzuki 0 | 0 | |
| 12 | McLaren Senna 0 + Berger 0 | Senna 0 + Berger 0 | 0 | |
| 13 | Team Lotus Häkkinen 0 | Häkkinen 0 | 0 | |
| 14 | Brabham Brundle 0 | Brundle 0 | 0 |
| Pos | Driver | Team | Race time / Gap | Laps | Stops | Pts | |
|---|---|---|---|---|---|---|---|
| 1 | Nelson Piquet Benetton | Benetton | 1:38:51.490 | 69 | — | 10 | |
| 2 | Stefano Modena Tyrrell | Tyrrell | +31.832s | 69 | — | 6 | |
| 3 | Riccardo Patrese Williams | Williams | +42.217s | 69 | — | 4 | |
| 4 | Andrea de Cesaris Jordan | Jordan | +1:20.210 | 69 | — | 3 | |
| 5 | Bertrand Gachot Jordan | Jordan | +1:22.351 | 69 | — | 2 | |
| 6 | Nigel Mansell Williams | Williams | DNF Electrical | 68 | — | 1 | |
| 7 | Pierluigi Martini Minardi | Minardi | +1 Lap | 68 | — | — | |
| 8 | Érik Comas Ligier | Ligier | +1 Lap | 68 | — | — | |
| 9 | Emanuele Pirro Dallara | Dallara | +1 Lap | 68 | — | — | |
| 10 | Satoru Nakajima Tyrrell | Tyrrell | +2 Laps | 67 | — | — | |
| DNF | Maurício Gugelmin Leyton House | Leyton House | DNF Engine | 61 | — | — | |
| DNF | Jyrki Järvilehto Dallara | Dallara | DNF Engine | 50 | — | — | |
| DNF | Stefan Johansson Footwork | Footwork | DNF Throttle | 48 | — | — | |
| DNF | Ivan Capelli Leyton House | Leyton House | DNF Engine | 42 | — | — | |
| DNF | Jean Alesi Ferrari | Ferrari | DNF Engine | 34 | — | — | |
| DNF | Éric Bernard Lola | Lola | DNF Gearbox | 29 | — | — | |
| DNF | Alain Prost Ferrari | Ferrari | DNF Gearbox | 27 | — | — | |
| DNF | Thierry Boutsen Ligier | Ligier | DNF Engine | 27 | — | — | |
| DNF | Ayrton Senna McLaren | McLaren | DNF Alternator | 25 | — | — | |
| DNF | Mika Häkkinen Team Lotus | Team Lotus | DNF Spun off | 21 | — | — | |
| DNF | Martin Brundle Brabham | Brabham | DNF Engine | 21 | — | — | |
| DNF | Gianni Morbidelli Minardi | Minardi | DNF Spun off | 20 | — | — | |
| DNF | Roberto Moreno Benetton | Benetton | DNF Suspension | 10 | — | — | |
| DNF | Gerhard Berger McLaren | McLaren | DNF Injection | 4 | — | — | |
| DNF | Aguri Suzuki Lola | Lola | DNF Fuel leak | 3 | — | — | |
| DNF | Michele Alboreto Footwork | Footwork | DNF Throttle | 2 | — | — |