| Circuit | Mosport International Raceway |
|---|---|
| Date | 1971-09-19 |
| Round | 10 |
| Pos | Driver | Team | Grid | Laps | Time/Status | Fastest Lap | Pts |
|---|---|---|---|---|---|---|---|
| 1 | Jackie Stewart | Tyrrell | 1 | 64 | 1:55:13.100 | — | 9 |
| 2 | Ronnie Peterson | March-Ford | 6 | 64 | +38.300 | — | 6 |
| 3 | Mark Donohue | McLaren | 8 | 64 | +1:35.800 | — | 4 |
| 4 | Denny Hulme | McLaren | 10 | 63 | +1 Lap | — | 3 |
| 5 | Reine Wisell | Lotus-Ford | 7 | 63 | +1 Lap | — | 2 |
| 6 | François Cevert | Tyrrell | 3 | 62 | +2 Laps | — | 1 |
| 7 | Emerson Fittipaldi | Lotus-Ford | 4 | 62 | +2 Laps | — | 0 |
| 8 | Jacky Ickx | Ferrari | 12 | 62 | +2 Laps | — | 0 |
| 9 | Jo Siffert | BRM | 2 | 61 | +3 Laps | — | 0 |
| 10 | Chris Amon | Matra | 5 | 61 | +3 Laps | — | 0 |
| 11 | John Surtees | Surtees | 14 | 60 | +4 Laps | — | 0 |
| 12 | Helmut Marko | BRM | 19 | 60 | +4 Laps | — | 0 |
| 13 | Mario Andretti | Ferrari | 13 | 60 | +4 Laps | — | 0 |
| 14 | Peter Gethin | BRM | 16 | 59 | +5 Laps | — | 0 |
| 15 | George Eaton | BRM | 21 | 59 | +5 Laps | — | 0 |
| 16 | Nanni Galli | March-Ford | 20 | 57 | +7 Laps | — | 0 |
| 17 | Mike Beuttler | March-Ford | 22 | 56 | Not classified | — | 0 |
| 18 | Pete Lovely | Lotus-Ford | 25 | 55 | Not classified | — | 0 |
| 19 | Rolf Stommelen | Surtees | 23 | 26 | Overheating | — | 0 |
| 20 | Jean-Pierre Beltoise | Matra | 11 | 15 | Accident | — | 0 |
| 21 | Skip Barber | March-Ford | 24 | 13 | Oil pressure | — | 0 |
| 22 | Clay Regazzoni | Ferrari | 18 | 7 | Accident | — | 0 |
| 23 | Graham Hill | Brabham | 15 | 2 | Accident | — | 0 |
| 24 | Tim Schenken | Brabham | 17 | 1 | Ignition | — | 0 |
| 25 | Howden Ganley | BRM | 9 | 0 | Accident | — | 0 |