| 2019 Formula 1 Mexican Grand Prix - Free Practice 1 Results |
| Pos | Driver | Nationality | Team | Time/Gap |
| 1 | Lewis Hamilton | GBR | Mercedes AMG Petronas Motorsport | 1m17.327s |
| 2 | Charles Leclerc | MON | Scuderia Ferrari | + 0.119s |
| 3 | Max Verstappen | NED | Aston Martin Red Bull Racing Honda | + 0.336s |
| 4 | Alexander Albon | THA | Aston Martin Red Bull Racing Honda | + 0.622s |
| 5 | Valtteri Bottas | FIN | Mercedes AMG Petronas Motorsport | + 0.678s |
| 6 | Sebastian Vettel | GER | Scuderia Ferrari | + 0.891s |
| 7 | Carlos Sainz | ESP | McLaren F1 Team | + 1.074s |
| 8 | Pierre Gasly | FRA | Red Bull Toro Rosso Honda | + 1.266s |
| 9 | Daniil Kvyat | RUS | Red Bull Toro Rosso Honda | + 1.508s |
| 10 | Antonio Giovinazzi | ITA | Alfa Romeo Racing | + 1.632s |
| 11 | Nico Hulkenberg | GER | Renault F1 Team | + 1.684s |
| 12 | Kevin Magnussen | DEN | Haas F1 Team | + 1.686s |
| 13 | Kimi Raikkonen | FIN | Alfa Romeo Racing | + 1.686s |
| 14 | Lando Norris | GBR | McLaren F1 Team | + 1.878s |
| 15 | Daniel Ricciardo | AUS | Renault F1 Team | + 2.172s |
| 16 | Lance Stroll | CAN | SportPesa Racing Point F1 Team | + 2.352s |
| 17 | Sergio Perez | MEX | SportPesa Racing Point F1 Team | + 2.390s |
| 18 | Romain Grosjean | FRA | Haas F1 Team | + 2.523s |
| 19 | George Russell | GBR | ROKiT Williams Racing | + 3.221s |
| 20 | Nicholas Latifi | CAN | ROKiT Williams Racing | + 4.239s |
