1951 Formula One season Teams and drivers Teams and drivers

| Entrant | Constructor_ | Chassis | Engine | Tyre | Driver | Rounds |
|---|---|---|---|---|---|---|
| HW Motors | HWM - Alta | 51 | Alta 2.0 L4 s | D | George Abecassis | 1 |
| HW Motors | HWM - Alta | 51 | Alta 2.0 L4 s | D | Stirling Moss | 1 |
| Scuderia Ferrari | Ferrari | 125 375 | Ferrari 125 1.5 V12 s Ferrari 375 4.5 V12 | D P | Peter Whitehead | 1 |
| Scuderia Ferrari | Ferrari | 125 375 | Ferrari 125 1.5 V12 s Ferrari 375 4.5 V12 | D P | Luigi Villoresi | 1, 3–8 |
| Scuderia Ferrari | Ferrari | 125 375 | Ferrari 125 1.5 V12 s Ferrari 375 4.5 V12 | D P | Alberto Ascari | 1, 3–8 |
| Scuderia Ferrari | Ferrari | 125 375 | Ferrari 125 1.5 V12 s Ferrari 375 4.5 V12 | D P | Piero Taruffi | 1, 3, 6–8 |