1955 Formula One season Teams and drivers Teams and drivers

| Entrant | Constructor_ | Chassis | Engine | Tyre | Driver | Rounds |
|---|---|---|---|---|---|---|
| Scuderia Ferrari | Ferrari Lancia | 625 555 D50 | Ferrari 555 2.5 L4 Lancia DS50 2.5 V8 | E | Paul Frère | 2, 4 |
| Scuderia Ferrari | Ferrari Lancia | 625 555 D50 | Ferrari 555 2.5 L4 Lancia DS50 2.5 V8 | E | Mike Hawthorn | 5–7 |
| Scuderia Ferrari | Ferrari Lancia | 625 555 D50 | Ferrari 555 2.5 L4 Lancia DS50 2.5 V8 | E | Eugenio Castellotti | 5–7 |
| Scuderia Ferrari | Ferrari Lancia | 625 555 D50 | Ferrari 555 2.5 L4 Lancia DS50 2.5 V8 | E | Luigi Villoresi | 7 |
| Officine Alfieri Maserati | Maserati | 250F | Maserati 250F1 2.5 L6 | P | Jean Behra | 1–2, 4–7 |
| Officine Alfieri Maserati | Maserati | 250F | Maserati 250F1 2.5 L6 | P | Roberto Mieres | 1–2, 4–7 |
| Officine Alfieri Maserati | Maserati | 250F | Maserati 250F1 2.5 L6 | P | Sergio Mantovani | 1 |