Team | Constructor | Motorcycle | No. | Rider | Rounds | Team Rothmans/Kanemoto Honda | Honda | Honda NSR500 | 1 | Eddie Lawson | 1–4, 6–15 | Rothmans Honda/HRC | Honda | Honda NSR500 | 2 | Wayne Gardner | 1–3, 9–13, 15 | 17 | Roger Burnett | 12 | 27 | Mick Doohan | 1–11, 15 | Team Lucky Strike Roberts | Yamaha | Yamaha YZR500 | 3 | Wayne Rainey | 1–4, 6–15 | 5 | Kevin Magee | 1–3, 6–15 | Team Roberts | Yamaha | Yamaha YZR500 | 49 | John Kocinski | 10 | Team Gauloises Blondes Mobil 1 | Yamaha | Yamaha YZR500 | 4 | Christian Sarron | 1–4, 6–15 | Marlboro Yamaha Team Agostini | Yamaha | Yamaha YZR500 | 6 | Niall Mackenzie | 1–4, 6, 8–15 | 19 | Freddie Spencer | 1–4, 6–11 | 53 | Luca Cadalora | 12 | 25 | Alberto Rota | 14 | Team Elf Honda/ROC | Honda | Honda NSR500 | 7 | Dominique Sarron | 1–4, 6–8, 12, 15 | 55 56 | Adrien Morillas | 11, 13–15 | Team Pepsi Suzuki | Suzuki | Suzuki RGV500 | 8 | Ron Haslam | 1–4, 6–9, 12–15 | 34 | Kevin Schwantz | All | HB Honda Gallina Team | Honda | Honda NSR500 | 9 | Pierfrancesco Chili | All | 33 84 | Fred Merkel | 5, 11–12 | Cabin Racing Team | Honda | Honda NSR500 | 10 | Rob McElnea | 6–15 | 25 | Bubba Shobert | 1–3 | Cagiva Corse | Cagiva | Cagiva C589 | 12 | Randy Mamola | 1–4, 6–11, 14–15 | 29 | Massimo Broccoli | 4–6 | 29 | Raymond Roche | 11 | HRK Motors | Honda | Honda RS500 | 14 | Michael Rudroff | 2–9, 14 | 54 56 | Cees Doorakkers | 9–12, 14 | Team Iberna | Yamaha | Yamaha YZR500 | 15 | Alessandro Valesi | All | Team Greco - Paton | Paton | Paton V115 500 | 16 | Marco Papa | 4–5, 8–12, 14 | Tech-21/Team Yamaha | Yamaha | Yamaha YZR500 | 21 | Tadahiko Taira | 1–4, 13–14 | Yamaha [Tech-21] | Yamaha | Yamaha YZR500 | 26 | Norihiko Fujiwara | 1 | 5–6 | Römer Racing Switzerland | Honda | Honda RS500 | 24 | Bruno Kneubühler | 3–4, 6–14 | Marlboro Fior Team | Fior | Fior C89 | 32 | Marco Gentile | 1–12 | Racing Team Katayama | Honda | Honda RS500 | 35 46 36 | Simon Buckmaster | All | 44 | Ian Pratt | 4, 12 | 54 | Fabio Biliotti | 11–14 | ?? | Honda | Honda RS500 | 35 | Josef Doppler | 4–7, 9–10, 12, 14 | Racing Team Librenti Corse | Librenti Suzuki | ?? Suzuki RGV500 | 36 37 | Andy Leuthe | 4–5, 8–9, 11–14 | ?? | Honda | Honda RS500 | 40 33 | Fernando González | 1–8, 10–12, 14–15 | Club Moto Cross Pozuelo | Honda | Honda RS500 | 41 30 | Juan López Mella | 4–7, 9, 11–15 | ?? | Honda | Honda RS500 | 56 38 | Niggi Schmassman | 2–15 | Marlboro | Yamaha | Yamaha YZR500 | 42 | Michael Dowson | 2 | HRC | Honda | Honda NSR500 | 11 | Shunji Yatsushiro | 1 | Source: [4] | | Key | Regular Rider | Wildcard Rider | Replacement Rider | |