2003 Formula One season Drivers and constructors Drivers and constructors

| Entrant | Constructor_ | Chassis | Engine_ | Tyre | Driver | Rounds | Free_Practice_drivers |
|---|---|---|---|---|---|---|---|
| European Minardi Cosworth | Minardi - Cosworth | PS03 | Cosworth CR-3 | B | Justin Wilson | 1–11 | Matteo Bobbi Gianmaria Bruni |
| European Minardi Cosworth | Minardi - Cosworth | PS03 | Cosworth CR-3 | B | Nicolas Kiesa | 12–16 | Matteo Bobbi Gianmaria Bruni |
| European Minardi Cosworth | Minardi - Cosworth | PS03 | Cosworth CR-3 | B | Jos Verstappen | All | Matteo Bobbi Gianmaria Bruni |
| Panasonic Toyota Racing | Toyota | TF103 | Toyota RVX-03 | M | Olivier Panis | All | N/A |
| Panasonic Toyota Racing | Toyota | TF103 | Toyota RVX-03 | M | Cristiano da Matta | All | N/A |