Fernando Alonso wound back the years as he went fastest in Free Practice 3 in Canada.
| Pos | Num | Driver | Team | Laps | Time | Diff |
| 1 | 14 | Fernando Alonso | Alpine F1 Team | 15 | 1:33.836 | |
| 2 | 10 | Pierre Gasly | Scuderia AlphaTauri | 18 | 1:33.889 | +0.053s |
| 3 | 5 | Sebastian Vettel | Aston Martin F1 Team | 18 | 1:33.891 | +0.055s |
| 4 | 31 | Esteban Ocon | Alpine F1 Team | 16 | 1:34.003 | +0.167s |
| 5 | 3 | Daniel Ricciardo | McLaren F1 Team | 14 | 1:34.110 | +0.274s |
| 6 | 4 | Lando Norris | McLaren F1 Team | 13 | 1:34.248 | +0.412s |
| 7 | 63 | George Russell | Mercedes-AMG F1 Team | 11 | 1:34.259 | +0.423s |
| 8 | 11 | Sergio Perez | Red Bull Racing | 10 | 1:34.498 | +0.662s |
| 9 | 1 | Max Verstappen | Red Bull Racing | 10 | 1:34.616 | +0.780s |
| 10 | 55 | Carlos Sainz | Scuderia Ferrari | 18 | 1:34.778 | +0.942s |
| 11 | 77 | Valtteri Bottas | Alfa Romeo F1 Team | 15 | 1:35.016 | +1.180s |
| 12 | 24 | Zhou Guanyu | Alfa Romeo F1 Team | 15 | 1:35.213 | +1.377s |
| 13 | 18 | Lance Stroll | Aston Martin F1 Team | 23 | 1:35.531 | +1.695s |
| 14 | 20 | Kevin Magnussen | Haas F1 Team | 17 | 1:35.643 | +1.807s |
| 15 | 44 | Lewis Hamilton | Mercedes-AMG F1 Team | 12 | 1:35.692 | +1.856s |
| 16 | 23 | Alex Albon | Williams Racing | 17 | 1:35.761 | +1.925s |
| 17 | 22 | Yuki Tsunoda | Scuderia AlphaTauri | 27 | 1:36.261 | +2.425s |
| 18 | 47 | Mick Schumacher | Haas F1 Team | 18 | 1:37.388 | +3.552s |
| 19 | 6 | Nicholas Latifi | Williams Racing | 11 | 1:38.394 | +4.558s |
| 20 | 16 | Charles Leclerc | Scuderia Ferrari | 5 |
