The 1989 Canadian Grand Prix was a Formula One race held at Circuit Gilles Villeneuve on June 18, 1989.
It was the first Formula One victory for Belgian driver Thierry Boutsen – who won three Formula One races overall, all during his two-year stint with Williams-Renault – and was the first win for the Williams-Renault partnership, which lasted until the end of the 1997 season and went on to win four Drivers' and five Constructors' World Championships in that time.
McLaren's Alain Prost scored his first pole position since the 1988 Portuguese Grand Prix, halting team mate Ayrton Senna's run of 8 straight poles since that race.
- Lap leaders: Alain Prost 1 (1), Ayrton Senna 30 (2-3, 39-66), Riccardo Patrese 31 (4-34), Derek Warwick 4 (35-38), Thierry Boutsen 3 (67-69)
- Nigel Mansell and Alessandro Nannini were disqualified after starting from the pitlane before the race began. Both drivers had gone into the pits to change to slicks after the warm-up lap and when they got to the end of pit lane found no lights or officials stopping them from returning to the track (no lights is generally a sign the race had started). Despite the problem being caused by the race stewards not having the end of pit lane lights turned on, and pit lane officials not doing their job properly by stopping them from exiting the pits as the race had not started, Mansell and Nannini were still disqualified.
- Stefan Johansson was black-flagged because an air-line became attached to his car during a pit stop. He ignored the flag to stop at the end of the pit lane and returned to the track, and was disqualified as a result.
- Triple World Champion Nelson Piquet scored his first points of the season which were enough to keep Lotus out of pre-qualifying after Britain (where he would again finish 4th). He had also scored his first points of 1984 when he won in Canada, though unlike 1984 he wasn't the defending World Champion.
- First win: Renault V10 engine. It was also the first win by a Renault powered car since Ayrton Senna won the 1986 Detroit Grand Prix in a turbocharged Lotus 98T and Renault's first win with a naturally aspirated engine
- Only fastest lap: Jonathan Palmer
- First podium: Scuderia Italia / Dallara
- Last podium: Andrea de Cesaris
- Last points: René Arnoux
- Last laps led: Derek Warwick
- First disqualification - Nigel Mansell
- Last disqualification - Stefan Johansson, Alessandro Nannini
- After Brabham had generally dominated pre-qualifying before Canada, Martin Brundle suffered problems in the session and failed to get into the main field for the race.
- Other than his two disqualifications in 1985 and 1986, or himself pulling out of a race in protest against the conditions (which would happen in the final race of 1989 in Australia), this would be the shortest race of Alain Prost's career with McLaren, lasting only until the start of the second lap before suspension failure when approaching the pits turn saw him pull into the pits and retire. It would also stand as the second shortest race of his F1 career after the infamous 1990 Japanese Grand Prix.
- This was the only Grand Prix where both Dallara cars finished in the points
- This was the first time since the BMW powered Benetton B186 of Gerhard Berger won the 1986 Mexican Grand Prix (39 races) that a win was not taken by a car using a Honda, Ferrari or TAG-Porsche engine.
Standings after the race
- Drivers' Championship standings
- Constructors' Championship standings
- Note: Only the top five positions are included for both sets of standings.