1991 Australian Grand Prix

The 1991 Australian Grand Prix was a Formula One motor race held on 3 November 1991 at the Adelaide Street Circuit. It was the 16th and final race of the 1991 Formula One season. Torrential rain resulted in the race being stopped after 16 of the scheduled 81 laps had been completed. Confusion caused the official results to be declared from the end of the 14th lap. It holds the record for being the shortest Formula One race ever held.

The race was won by Ayrton Senna, with Nigel Mansell in second position, and Gerhard Berger's third place finish plus Senna's victory meant that the McLaren team clinched the Constructor's championship. Mansell was unable to take part in the post race podium ceremony, following a crash at the end of the race that left him requiring hospital treatment. Gerhard Berger, Senna's McLaren teammate, finished in third position. Because less than seventy-five percent of the scheduled race distance had been completed, only half the normal World Championship points were awarded. This was also Nelson Piquet's last Formula One race.