2008 Grand Prix motorcycle racing season MotoGP participants MotoGP participants

| Team | Constructor_ | Motorcycle | Tyre | Rider | Rounds |
|---|---|---|---|---|---|
| Rizla Suzuki MotoGP | Suzuki | Suzuki GSV-R | B | Chris Vermeulen | All |
| Rizla Suzuki MotoGP | Suzuki | Suzuki GSV-R | B | Nobuatsu Aoki | 17 |
| Rizla Suzuki MotoGP | Suzuki | Suzuki GSV-R | B | Ben Spies | 8 |
| Rizla Suzuki MotoGP | Suzuki | Suzuki GSV-R | B | Ben Spies | 11, 14 |
| Rizla Suzuki MotoGP | Suzuki | Suzuki GSV-R | B | Kousuke Akiyoshi | 15 |
| Rizla Suzuki MotoGP | Suzuki | Suzuki GSV-R | B | Loris Capirossi | 1–7, 9–18 |
| Kawasaki Racing Team | Kawasaki | Kawasaki Ninja ZX-RR | B | Jamie Hacking | 11 |
| Kawasaki Racing Team | Kawasaki | Kawasaki Ninja ZX-RR | B | Anthony West | All |
| Kawasaki Racing Team | Kawasaki | Kawasaki Ninja ZX-RR | B | John Hopkins | 1–9, 12–18 |
| LCR Honda MotoGP | Honda | Honda RC212V | M | Randy de Puniet | All |