Tercera sesión de entrenamientos libres del Gran Premio de Portugal 2021
| Pos. | Piloto | Escuderia | Tiempo | Vueltas |
|---|---|---|---|---|
| 1 |  Max Verstappen |
Red Bull | 1:18.489 | 21 |
| 2 |  Lewis Hamilton |
Mercedes | +0.236s | 21 |
| 3 |  Valtteri Bottas |
Mercedes | +0.331s | 19 |
| 4 |  Sergio Pérez |
Red Bull | +0.351s | 25 |
| 5 |  Esteban Ocon |
Alpine | +0.371s | 19 |
| 6 |  Charles Leclerc |
Ferrari | +0.512s | 23 |
| 7 |  Carlos Sainz Jr. |
Ferrari | +0.561s | 24 |
| 8 |  Lando Norris |
McLaren | +0.783s | 18 |
| 9 | Pierre Gasly |
Alpha Tauri | +0.885s | 26 |
| 10 | Kimi Räikkönen |
Alfa Romeo | +0.926s | 26 |
| 11 |  Yuki Tsunoda |
Alpha Tauri | +0.996s | 25 |
| 12 |  Daniel Ricciardo |
McLaren | +1.093s | 19 |
| 13 |  Antonio Giovinazzi |
Alfa Romeo | +1.099s | 23 |
| 14 | Fernando Alonso |
Alpine | +1.460s | 20 |
| 15 |  Mick Schumacher |
Haas | +1.544s | 22 |
| 16 |  Lance Stroll |
Aston Martin | +1.601s | 17 |
| 17 | George Russell |
Williams | +1.638s | 18 |
| 18 | Sebastian Vettel |
Aston Martin | +1.725s | 21 |
| 19 | Nicholas Latifi |
Williams | +2.192s | 19 |
| 20 |  Nikita Mazepin |
Haas | +2.201s | 20 |