1975 Formula One season Drivers and constructors Drivers and constructors

| Entrant | Constructor_ | Chassis | Engine | Tyre | Driver | Rounds |
|---|---|---|---|---|---|---|
| Custom Made Harry Stiller Racing | Hesketh - Ford | 308B | Ford Cosworth DFV 3.0 V8 | G | Alan Jones | 4 |
| Custom Made Harry Stiller Racing | Hesketh - Ford | 308B | Ford Cosworth DFV 3.0 V8 | G | Alan Jones | 5-7 |
| Vel`s Parnelli Jones Racing | Parnelli - Ford | VPJ4 | Ford Cosworth DFV 3.0 V8 | F G | Mario Andretti | 1-5, 7, 9-14 |
| Penske Cars | Penske - Ford | PC1 | Ford Cosworth DFV 3.0 V8 | G | Mark Donohue | 1-9 |
| Penske Cars | Penske - Ford | PC1 | Ford Cosworth DFV 3.0 V8 | G | John Watson | 14 |
| Penske Cars | March - Ford | 751 | Ford Cosworth DFV 3.0 V8 | G | Mark Donohue | 10-12 |
| Copersucar-Fittipaldi | Fittipaldi - Ford | FD01 | Ford Cosworth DFV 3.0 V8 | G | Wilson Fittipaldi | 1-12, 14 |