2009 Grand Prix motorcycle racing season MotoGP participants MotoGP participants

| Team | Constructor_ | Motorcycle | Rider | Rounds |
|---|---|---|---|---|
| Fiat Yamaha Team | Yamaha | Yamaha YZR-M1 | Valentino Rossi | All |
| Fiat Yamaha Team | Yamaha | Yamaha YZR-M1 | Jorge Lorenzo | All |
| Repsol Honda Team | Honda | Honda RC212V | Dani Pedrosa | All |
| Repsol Honda Team | Honda | Honda RC212V | Andrea Dovizioso | All |
| Ducati Marlboro Team | Ducati | Ducati Desmosedici GP9 | Casey Stoner | 1-10, 14-17 |
| Ducati Marlboro Team | Ducati | Ducati Desmosedici GP9 | Nicky Hayden | All |
| Ducati Marlboro Team | Ducati | Ducati Desmosedici GP9 | Mika Kallio 1 | 11-13 |
| Monster Yamaha Tech 3 | Yamaha | Yamaha YZR-M1 | Colin Edwards | All |
| Monster Yamaha Tech 3 | Yamaha | Yamaha YZR-M1 | James Toseland | All |
| Rizla Suzuki MotoGP | Suzuki | Suzuki GSV-R | Chris Vermeulen | All |