Lewis Hamilton a signé la position de tête du Grand Prix de Singapour devant Max Verstappen et Sebastian Vettel. On retrouve ensuite Valtteri Bottas, Kimi Räikkönen et Daniel Ricciardo. Sergio Perez et Estaban Ocon sont 7e et 9e.
| Pos | No | Pilote | Équipe | Q1 | Q2 | Q3 | Tours |
|---|---|---|---|---|---|---|---|
| 1 | 44 | Lewis Hamilton | Mercedes | 1:39.403 | 1:37.344 | 1:36.015 | 17 |
| 2 | 33 | Max Verstappen | Red Bull Racing TAG Heuer | 1:38.751 | 1:37.214 | 1:36.334 | 14 |
| 3 | 5 | Sebastian Vettel | Ferrari | 1:38.218 | 1:37.876 | 1:36.628 | 17 |
| 4 | 77 | Valtteri Bottas | Mercedes | 1:39.291 | 1:37.254 | 1:36.702 | 20 |
| 5 | 7 | Kimi Räikkönen | Ferrari | 1:38.534 | 1:37.194 | 1:36.794 | 17 |
| 6 | 3 | Daniel Ricciardo | Red Bull Racing TAG Heuer | 1:38.153 | 1:37.406 | 1:36.996 | 12 |
| 7 | 11 | Sergio Perez | Force India Mercedes | 1:38.814 | 1:38.342 | 1:37.985 | 19 |
| 8 | 8 | Romain Grosjean | Haas Ferrari | 1:38.685 | 1:38.367 | 1:38.320 | 15 |
| 9 | 31 | Esteban Ocon | Force India Mercedes | 1:38.912 | 1:38.534 | 1:38.365 | 20 |
| 10 | 27 | Nico Hulkenberg | Renault | 1:38.932 | 1:38.450 | 1:38.588 | 18 |
| 11 | 14 | Fernando Alonso | McLaren Renault | 1:39.022 | 1:38.641 | 12 | |
| 12 | 55 | Carlos Sainz | Renault | 1:39.103 | 1:38.716 | 12 | |
| 13 | 16 | Charles Leclerc | Sauber Ferrari | 1:39.206 | 1:38.747 | 14 | |
| 14 | 9 | Marcus Ericsson | Sauber Ferrari | 1:39.366 | 1:39.453 | 14 | |
| 15 | 10 | Pierre Gasly | Scuderia Toro Rosso Honda | 1:39.614 | 1:39.691 | 13 | |
| 16 | 20 | Kevin Magnussen | Haas Ferrari | 1:39.644 | 6 | ||
| 17 | 28 | Brendon Hartley | Scuderia Toro Rosso Honda | 1:39.809 | 8 | ||
| 18 | 2 | Stoffel Vandoorne | McLaren Renault | 1:39.864 | 8 | ||
| 19 | 35 | Sergey Sirotkin | Williams Mercedes | 1:41.263 | 8 | ||
| 20 | 18 | Lance Stroll | Williams Mercedes | 1:41.334 | 6 |