Großer Preis von Portugal 2021 / Portimao
3. Training
| Pos. | Nr. | Fahrer | Team | Zeit | Rückstand | Rdn. |
|---|---|---|---|---|---|---|
| 1 | 33 |  | Red Bull | 1.18.489 | --- | 21 |
| 2 | 44 | | Mercedes | 1.18.725 | + 0.236 | 21 |
| 3 | 77 | | Mercedes | 1.18.820 | + 0.331 | 19 |
| 4 | 11 | | Red Bull | 1.18.840 | + 0.351 | 25 |
| 5 | 31 | | Alpine | 1.18.860 | + 0.371 | 19 |
| 6 | 16 | | Ferrari | 1.19.001 | + 0.512 | 23 |
| 7 | 55 | | Ferrari | 1.19.050 | + 0.561 | 24 |
| 8 | 4 | | McLaren | 1.19.272 | + 0.783 | 18 |
| 9 | 10 | | AlphaTauri | 1.19.374 | + 0.885 | 26 |
| 10 | 7 | | Alfa Romeo | 1.19.415 | + 0.926 | 26 |
| 11 | 22 | | AlphaTauri | 1.19.485 | + 0.996 | 25 |
| 12 | 3 | | McLaren | 1.19.582 | + 1.093 | 19 |
| 13 | 99 | | Alfa Romeo | 1.19.588 | + 1.099 | 23 |
| 14 | 14 | | Alpine | 1.19.949 | + 1.460 | 20 |
| 15 | 47 | | Haas F1 | 1.20.033 | + 1.544 | 22 |
| 16 | 18 | | Aston Martin | 1.20.090 | + 1.601 | 17 |
| 17 | 63 | | Williams | 1.20.127 | + 1.638 | 18 |
| 18 | 5 | | Aston Martin | 1.20.214 | + 1.725 | 21 |
| 19 | 6 | | Williams | 1.20.681 | + 2.192 | 19 |
| 20 | 9 | | Haas F1 | 1.20.690 | + 2.201 | 20 |
