Tercera sesión de entrenamientos libres del Gran Premio de Estados Unidos 2021
| Pos. | Piloto | Escuderia | Tiempo | Vueltas |
|---|---|---|---|---|
| 1 |  Sergio Pérez |
Red Bull | 1:34.701 | 13 |
| 2 |  Carlos Sainz Jr. |
Ferrari | +0.104s | 16 |
| 3 |  Max Verstappen |
Red Bull | +0.211s | 13 |
| 4 |  Lando Norris |
McLaren | +0.244s | 13 |
| 5 |  Valtteri Bottas |
Mercedes | +0.287s | 15 |
| 6 |  Lewis Hamilton |
Mercedes | +0.518s | 16 |
| 7 |  Daniel Ricciardo |
McLaren | +0.644s | 11 |
| 8 |  Pierre Gasly |
Alpha Tauri | +0.697s | 17 |
| 9 |  Charles Leclerc |
Ferrari | +0.987s | 17 |
| 10 | Esteban Ocon |
Alpine | +1.010s | 10 |
| 11 |  Sebastian Vettel |
Aston Martin | +1.150s | 18 |
| 12 | George Russell |
Williams | +1.322s | 9 |
| 13 | Kimi Räikkönen |
Alfa Romeo | +1.361s | 20 |
| 14 |  Nicholas Latifi |
Williams | +1.417s | 8 |
| 15 |  Antonio Giovinazzi |
Alfa Romeo | +1.551s | 16 |
| 16 | Lance Stroll |
Aston Martin | +1.691s | 13 |
| 17 | Fernando Alonso |
Alpine | +1.789s | 12 |
| 18 |  Yuki Tsunoda |
Alpha Tauri | +1.871s | 16 |
| 19 | Mick Schumacher |
Haas | +1.970s | 15 |
| 20 |  Nikita Mazepin |
Haas | +28.755s | 15 |