Tercera sesión de entrenamientos libres del Gran Premio de Emilia-Romaña 2021
| Pos. | Piloto | Escuderia | Tiempo | Vueltas |
|---|---|---|---|---|
| 1 |  Max Verstappen |
Red Bull | 1:14.958 | 18 |
| 2 |  Lando Norris |
McLaren | +0.456s | 17 |
| 3 |  Lewis Hamilton |
Mercedes | +0.557s | 18 |
| 4 |  Sergio Pérez |
Red Bull | +0.593s | 18 |
| 5 |  Charles Leclerc |
Ferrari | +0.780s | 21 |
| 6 |  Pierre Gasly |
Alpha Tauri | +0.932s | 22 |
| 7 |  Carlos Sainz Jr. |
Ferrari | +0.950s | 21 |
| 8 |  Valtteri Bottas |
Mercedes | +0.950s | 19 |
| 9 | Fernando Alonso |
Alpine | +1.228s | 20 |
| 10 | Esteban Ocon |
Alpine | +1.270s | 20 |
| 11 |  Yuki Tsunoda |
Alpha Tauri | +1.272s | 20 |
| 12 |  Lance Stroll |
Aston Martin | +1.287s | 19 |
| 13 |  Daniel Ricciardo |
McLaren | +1.295s | 17 |
| 14 |  Sebastian Vettel |
Aston Martin | +1.431s | 19 |
| 15 | George Russell |
Williams | +1.469s | 20 |
| 16 | Mick Schumacher |
Haas | +1.490s | 22 |
| 17 | Nicholas Latifi |
Williams | +1.579s | 15 |
| 18 |  Antonio Giovinazzi |
Alfa Romeo | +1.654s | 22 |
| 19 | Kimi Räikkönen |
Alfa Romeo | +1.845s | 23 |
| 20 |  Nikita Mazepin |
Haas | +2.440s | 23 |