The 1971 Canadian Grand Prix was held at Mosport Park on September 19, 1971. It was race 10 of 11 in both the 1971 World Championship of Drivers and the 1971 International Cup for Formula One Manufacturers. Jackie Stewart took the win in the awful conditions and the race was stopped after 64 laps of the scheduled 80 due to the weather.
Jacky Ickx finished in P8 for Scuderia Ferrari, while teammate Mario Andretti was classified in P13.
This was the first ever Formula One race to be red flagged