1991 Formula One season Drivers and constructors Drivers and constructors

| Entrant | Constructor_ | Chassis | Engine | Tyre | Driver | Rounds |
|---|---|---|---|---|---|---|
| Team 7Up Jordan | Jordan - Ford | 191 | Ford HB4 V8 | G | Alessandro Zanardi | 14-16 |
| Team 7Up Jordan | Jordan - Ford | 191 | Ford HB4 V8 | G | Andrea de Cesaris | All |
| Modena Team | Lambo - Lamborghini | 291 | Lamborghini 3512 V12 | G | Nicola Larini | All |
| Modena Team | Lambo - Lamborghini | 291 | Lamborghini 3512 V12 | G | Eric van de Poele | All |