1956 Formula One season Teams and drivers Teams and drivers

| Entrant | Constructor_ | Chassis | Engine | Tyre | Driver | Rounds |
|---|---|---|---|---|---|---|
| Piero Scotti | Connaught - Alta | B | Alta GP 2.5 L4 | P | Piero Scotti | 4 |
| Automobiles Bugatti | Bugatti | T251 | Bugatti 2.5 L8 | E | Maurice Trintignant | 5 |
| Luigi Piotti | Maserati | 250F | Maserati 250F1 2.5 L6 | P | Luigi Villoresi | 5–7 |
| Luigi Piotti | Maserati | 250F | Maserati 250F1 2.5 L6 | P | Luigi Piotti | 7–8 |
| André Simon | Maserati | 250F | Maserati 250F1 2.5 L6 | P | André Simon | 5 |
| Scuderia Guastalla | Maserati | 250F | Maserati 250F1 2.5 L6 | P | Umberto Maglioli | 6 |
| Scuderia Guastalla | Maserati | 250F | Maserati 250F1 2.5 L6 | P | Gerino Gerini | 8 |
| Connaught Engineering | Connaught - Alta | B | Alta GP 2.5 L4 | P A | Archie Scott-Brown | 6, 8 |