1987 500cc Grand Prix leading entries:
| no. | rider | entrant | bike |
| 1 | Eddie Lawson USA | Marlboro Yamaha Team Agostini | Yamaha YZR |
| 5 | Rob McElnea ENG | Marlboro Yamaha Team Agostini | Yamaha YZR |
| 21 | Tadahiko Taira JAP | Marlboro Yamaha Team Agostini¹ | Yamaha YZR |
| 2 | Wayne Gardner AUS | Rothmans Honda/HRC | Honda NSR |
| 16 | Shunji Yatsushiro JAP | Rothmans Honda/HRC | Honda NSR |
| 12 | Roger Burnett ENG | Rothmans Racing | Honda NSR |
| 3 | Randy Mamola USA | Team Lucky Strike Roberts | Yamaha YZR |
| 4 | Mike Baldwin USA | Team Lucky Strike Roberts | Yamaha YZR |
| 33 | Richard Scott NZL* | Team Lucky Strike Roberts | Yamaha YZR |
| 51 | Kenny Roberts USA** | Team Lucky Strike Roberts | Yamaha |
| 40 | Kevin Magee AUS***# | Team Roberts | Yamaha YZR |
| 6 | Christian Sarron FRA | Team Sonauto Gauloises | Yamaha YZR |
| 7 | Didier de Radiguès BEL | Team Cagiva - Alstare | Cagiva |
| 8 | Raymond Roche FRA | Team Cagiva - Alstare | Cagiva |
| 9 | Ron Haslam ENG | Team Elf-ROC | Honda/Elf |
| 10 | Pier-Francesco Chili ITA | HB Honda Gallina | Honda NS |
| 11 | Niall Mackenzie SCO | HB Honda/HRC | Honda NSR |
| 19 | Freddie Spencer USA**** | Honda Racing Corporation | Honda NSR |
| 14 | Gustav Reiner BRD | Hein Gericke Racing | Honda RS/NS |
| 36 | Manfred Fischer BRD# | Hein Gericke Racing | HG-Honda |
| 15 | Fabio Biliotti ITA | Servisco | Honda RS |
| 18 | Kenny Irons ENG | Heron Suzuki GB Ltd | Heron/Suzuki |
| 34 | Kevin Schwantz USA*** | Heron Suzuki GB Ltd | Heron/Suzuki |
| 34 | Donnie McLeod SCO*** | Heron Suzuki GB Ltd | Heron/Suzuki |
| 22 | Simon Buckmaster ENG | Duckhams NLM Honda | Honda RS |
| 23 | Alessandro Valesi ITA | Team Iberna | Honda RS |
| 24 | Wolfgang von Muralt SUI | Frankonia-Suzuki | Suzuki RGB |
| 25 | Marco Gentile SUI | Lucky Strike Fior | Fior-Honda |
| 53 | Thierry Rapicault FRA# | Fior-SNCF | Fior-Honda |
| 55 | Hervé Guilleux FRA*# | Fior-SNCF | Fior-Honda |
| 32 | Takumi Ito JAP*** | Suzuki Japan | Suzuki RGV |
| 40 | Andreas Leuthe LUX | Andy Leuthe | Honda RS |
| 42 | Fabio Barchitta RSM# | Honda RS | |
| 45 | Bruno Kneubühler SUI# | Bruno Kneubühler | Honda RS |
| 57 | Richard Scott NZL# | Honda Britain | Honda RS/NS |
| 61 | Maarten Duyzers NED# | H.D.J. B.Y | Honda RS |
| 75 | Silvo Habat JUG# | FE-GO | Honda RS |
| Gerold Fischer BRD | Honda RS | ||
| Shinji Katayama JAP*** | Yamaha Japan | Yamaha YZR | |
| Hiroyuki Kawasaki JAP*** | Yamaha Japan | Yamaha YZR |
* substitute rider
** one-off in practice only
*** wildcard entry at selected races
**** did not race full season
¹ Tech21 Racing
# Magee also raced numbers 17 and 34
# Fischer also raced number 34
# Rapicault also raced number 26
# Guilleux also raced number 72
# Scott also raced number 33
# Barchitta also raced numbers 78 and 29
# Kneubühler also raced numbers 65 and 55
# Duyzers also raced number 44
# Habat also raced number 50
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