1951 Formula One season Teams and drivers Teams and drivers

| Entrant | Constructor_ | Chassis | Engine | Tyre | Driver | Rounds |
|---|---|---|---|---|---|---|
| Alfa Romeo SpA | Alfa Romeo | 159 | Alfa Romeo 158 1.5 L8 s | P | Felice Bonetto | 5–8 |
| Alfa Romeo SpA | Alfa Romeo | 159 | Alfa Romeo 158 1.5 L8 s | P | Paul Pietsch | 6 |
| Enrico Platé | Maserati | 4CLT/48 | Maserati 4CLT 1.5 L4 s | P | Louis Chiron | 1 |
| Enrico Platé | Maserati | 4CLT/48 | Maserati 4CLT 1.5 L4 s | P | Harry Schell | 1, 4 |
| Enrico Platé | Maserati | 4CLT/48 | Maserati 4CLT 1.5 L4 s | P | Toulo de Graffenried | 4, 6 |
| Ecurie Espadon | Ferrari | 212 166 | Ferrari 375 2.5 V12 | P | Rudi Fischer | 1, 6–7 |
| José Froilán González | Talbot-Lago | T26C | Talbot 23CV 4.5 L6 | D | José Froilán González | 1 |
| Peter Hirt | Veritas | Meteor | Veritas 2.0 L6 | P | Peter Hirt | 1 |