Full results from Free Practice 3 at the Formula 1 Belgian Grand Prix at Spa-Francorchamps.
| Pos | Num | Driver | Team | Laps | Time | Diff |
| 1 | 11 | Sergio Perez | Red Bull Racing | 18 | 1:45.047 | |
| 2 | 1 | Max Verstappen | Red Bull Racing | 18 | 1:45.184 | +0.137s |
| 3 | 55 | Carlos Sainz | Scuderia Ferrari | 12 | 1:45.824 | +0.777s |
| 4 | 4 | Lando Norris | McLaren F1 Team | 19 | 1:45.965 | +0.918s |
| 5 | 14 | Fernando Alonso | Alpine F1 Team | 15 | 1:46.061 | +1.014s |
| 6 | 63 | George Russell | Mercedes-AMG F1 Team | 18 | 1:46.071 | +1.024s |
| 7 | 16 | Charles Leclerc | Scuderia Ferrari | 11 | 1:46.120 | +1.073s |
| 8 | 5 | Sebastian Vettel | Aston Martin F1 Team | 17 | 1:46.166 | +1.119s |
| 9 | 31 | Esteban Ocon | Alpine F1 Team | 23 | 1:46.601 | +1.554s |
| 10 | 10 | Pierre Gasly | Scuderia AlphaTauri | 18 | 1:46.604 | +1.557s |
| 11 | 3 | Daniel Ricciardo | McLaren F1 Team | 17 | 1:46.646 | +1.599s |
| 12 | 44 | Lewis Hamilton | Mercedes-AMG F1 Team | 19 | 1:46.769 | +1.722s |
| 13 | 6 | Nicholas Latifi | Williams Racing | 19 | 1:46.811 | +1.764s |
| 14 | 23 | Alex Albon | Williams Racing | 19 | 1:46.836 | +1.789s |
| 15 | 77 | Valtteri Bottas | Alfa Romeo F1 Team | 19 | 1:46.881 | +1.834s |
| 16 | 18 | Lance Stroll | Aston Martin F1 Team | 15 | 1:46.975 | +1.928s |
| 17 | 20 | Kevin Magnussen | Haas F1 Team | 13 | 1:46.982 | +1.935s |
| 18 | 22 | Yuki Tsunoda | Scuderia AlphaTauri | 22 | 1:47.035 | +1.988s |
| 19 | 24 | Zhou Guanyu | Alfa Romeo F1 Team | 19 | 1:47.089 | +2.042s |
| 20 | 47 | Mick Schumacher | Haas F1 Team | 6 | 1:52.494 | +7.447s |
