Drivers and Constructors
| Team | Chassis | Engine | Car # | Driver | Race weekends |
|---|---|---|---|---|---|
| DAMS | Lola | Mugen Honda | 1 | Allan McNish | All |
| 2 | Laurent Aïello | All | |||
| GA Motorsport | Ralt | Ford Cosworth | 3 | Michael Bartels | 1 |
| Massimo Monti | 2 | ||||
| 4 | Thierry Delubac | 1-2 | |||
| BFG 3000 | Reynard | Mugen Honda | 4 | Giovanni Bonanno | 3-9 |
| First Racing | Reynard | Ford Cosworth | 5 | Giovanni Bonanno | 1 |
| Michael Bartels | 2-4 | ||||
| 6 | Jean-Denis Délétraz | 1-3 | |||
| 7 | Eric Hélary | 1-4 | |||
| Paul Stewart Racing | Lola | Mugen Honda | 8 | Marco Apicella | All |
| 9 | Paul Stewart | All | |||
| Forti Corse | Lola | Ford Cosworth | 11 | Emanuele Naspetti | 1-3 |
| Reynard | 4-10 | ||||
| Lola | 12 | Fabrizio Giovanardi | 1-3 | ||
| Reynard | 4-10 | ||||
| Eddie Jordan Racing | Lola | Ford Cosworth | 14 | Damon Hill | 1-9 |
| Reynard | 10 | ||||
| Lola | 15 | Vincenzo Sospiri | All | ||
| Roni Motorsport | Ralt | Ford Cosworth | 16 | Fernando Plata | 1-5 |
| Giovanni Lavaggi | 6-10 | ||||
| 17 | David Brabham | 1-4 | |||
| Andrew Gilbert-Scott | 5-6 | ||||
| Apomatox | Reynard | Ford Cosworth | 18 | Paul Belmondo | All |
| 19 | Andrea Chiesa | 1-8 | |||
| Emmanuel Collard | 9-10 | ||||
| Crypton Engineering | Reynard | Ford Cosworth | 20 | Roberto Colciago | All |
| 21 | Fabrizio Barbazza | 1 | |||
| Pascal Witmeur | 8 | ||||
| Philippe Gache | 10 | ||||
| 22 | Giovanni Lavaggi | 1-5 | |||
| Peter Zakowski | 6-8 | ||||
| CoBRa Motorsports | Reynard | Ford Cosworth | 23 | Paolo Delle Piane | All |
| 24 | Alain Menu | 1-6 | |||
| Eric Hélary | 7-10 | ||||
| RSM Marko | Reynard | Ford Cosworth | 25 | Karl Wendlinger | 3, 5-6, 8-9 |
| Galaxy Racing | Reynard | Ford Cosworth | 26 | Philippe Gache | 1-9 |
| David Velay | 10 | ||||
| Vortex Motorsport | Lola | Mugen Honda | 27 | Heinz-Harald Frentzen | All |
| Pacific Racing | Reynard | Mugen Honda | 29 | Antonio Tamburini | All |
| 30 | Christian Fittipaldi | All | |||
| 3001 International | Ralt | Ford Cosworth | 31 | Jean-Marc Gounon | All |
| 32 | Andrea Montermini | All | |||
| Il Barone Rampante | Reynard | Mugen Honda | 33 | Alessandro Zanardi | All |
| 34 | Giuseppe Bugatti | All | |||
| Motor Racing Di-Wheels | Leyton House | Ford Cosworth | 38 | Fabiano Vandone | 1-4 |
| Ralt | 5-9 | ||||
| Leyton House | 39 | Simon Kane | 6-7 | ||
| Pavesi Racing | Reynard | Mugen Honda | 40 | Felice Tedeschi | 1-8 |
| Massimiliano Angelelli | 9 | ||||
| GJ Motorsport | Reynard | Ford Cosworth | 41 | Giovanna Amati | All |
| 42 | Dave Coyne | 7 |
Read more about this topic: 1991 International Formula 3000 Season