# Grand Prix moto du Japon 2003

Le Grand Prix moto du Japon 2003 est la première manche du championnat du monde de vitesse moto 2003. La compétition s'est déroulée du 4 au 6 avril 2003 sur le circuit de Suzuka.
C'est la 23e édition du Grand Prix moto du Japon.

## Classement des MotoGP

| Pos. | Pilote | Constructeur | Temps/Écart | Grille | Points |
| 1 | Valentino Rossi | Honda | 44 min 13 s 182 | 1 | 25 |
| 2 | Max Biaggi | Honda | +6 s 445 | 2 | 20 |
| 3 | Loris Capirossi | Ducati | +8 s 209 | 15 | 16 |
| 4 | Sete Gibernau | Honda | +13 s 209 | 6 | 13 |
| 5 | Troy Bayliss | Ducati | +23 s 099 | 13 | 11 |
| 6 | Colin Edwards | Aprilia | +29 s 040 | 9 | 10 |
| 7 | Nicky Hayden | Honda | +29 s 126 | 23 | 9 |
| 8 | Alex Barros | Yamaha | +30 s 526 | 8 | 8 |
| 9 | Shinya Nakano | Yamaha | +33 s 447 | 10 | 7 |
| 10 | Carlos Checa | Yamaha | +40 s 200 | 4 | 6 |
| 11 | Norifumi Abe | Yamaha | +44 s 790 | 14 | 5 |
| 12 | Noriyuki Haga | Aprilia | +1 min 03 s 358 | 17 | 4 |
| 13 | John Hopkins | Suzuki | +1 min 03 s 950 | 12 | 3 |
| 14 | Kenny Roberts Jr | Suzuki | +1 min 04 s 085 | 7 | 2 |
| 15 | Olivier Jacque | Yamaha | +1 min 09 s 990 | 21 | 1 |
| 16 | Garry McCoy | Kawasaki | +1 min 16 s 572 | 20 | |
| 17 | Andrew Pitt | Kawasaki | +1 min 17 s 380 | 24 | |
| 18 | Akira Yanagawa | Kawasaki | +1 min 23 s 605 | 18 | |
| 19 | Tamaki Serizawa | MD211VF Proto | +1 min 35 s 459 | 16 | |
| 20 | Tohru Ukawa | Honda | +1 min 57 s 128 | 3 | |
| Abd. | Makoto Tamada | Honda | Abandon | 5 | |
| Abd. | Nobuatsu Aoki | Proton | Abandon | 19 | |
| Abd. | Jeremy McWilliams | Proton | Abandon | 25 | |
| Abd. | Daijiro Kato | Honda | Abandon | 11 | |
*Daijiro Kato fait une chute au bout de 4 minutes de course qui entraine son décès deux semaines plus tard.

## Classement des 250 cm$^3$

| Pos | Pilote | Constructeur | Temps/Écart | Grille | Points |
| 1 | Manuel Poggiali | Aprilia | 41 min 36 s 284 | 23 | 25 |
| 2 | Hiroshi Aoyama | Honda | +1 s 373 | 1 | 20 |
| 3 | Yuki Takahashi | Honda | +1 s 496 | 7 | 16 |
| 4 | Sebastian Porto | Honda | +1 s 700 | 6 | 13 |
| 5 | Franco Battaini | Aprilia | +11 s 771 | 16 | 11 |
| 6 | Fonsi Nieto | Aprilia | +13 s 220 | 9 | 10 |
| 7 | Roberto Rolfo | Honda | +13 s 497 | 4 | 9 |
| 8 | Naoki Matsudo | Yamaha | +14 s 027 | 5 | 8 |
| 9 | Tekkyu Kayoh | Yamaha | +24 s 546 | 12 | 7 |
| 10 | Sylvain Guintoli | Aprilia | +42 s 722 | 8 | 6 |
| 11 | Alex Debón | Honda | +43 s 246 | 3 | 5 |
| 12 | Erwan Nigon | Aprilia | +47 s 871 | 21 | 4 |
| 13 | Joan Olive | Aprilia | +1 min 09 s 405 | 25 | 3 |
| 14 | Johan Stigefelt | Aprilia | +1 min 09 s 779 | 13 | 2 |
| 15 | Jakub Smrž | Honda | +1 min 21 s 048 | 10 | 1 |
| 16 | Éric Bataille | Honda | +1 min 21 s 788 | 27 | |
| 17 | Jaroslav Huleš | Yamaha | +1 min 35 s 538 | 15 | |
| 18 | Chaz Davies | Aprilia | +1 min 38 s 489 | 28 | |
| 19 | Henk vd Lagemaat | Honda | +1 min 41 s 507 | 30 | |
| 20 | Katja Poensgen | Honda | +1 tour | 26 | |
| Abd. | Héctor Faubel | Aprilia | Abandon | 18 | |
| Abd. | Alex Baldolini | Aprilia | Abandon | 11 | |
| Abd. | Christian Gemmel | Honda | Abandon | 24 | |
| Abd. | Anthony West | Aprilia | Abandon | 17 | |
| Abd. | Toni Elías | Aprilia | Abandon | 29 | |
| Abd. | Katsuyuki Nakasuga | Yamaha | Abandon | 2 | |
| Abd. | Randy de Puniet | Aprilia | Abandon | 20 | |
| Abd. | Tomoyoshi Koyama | Yamaha | Abandon | 22 | |
| Abd. | Dirk Heidolf | Aprilia | Abandon | 19 | |
| Abd. | Hugo Marchand | Aprilia | Abandon | 14 | |

## Classement des 125 cm$^3$

| Pos | Pilote | Constructeur | Temps/Écart | Grille | Points |
| 1 | Stefano Perugini | Aprilia | 40 min 53 s 083 | 5 | 25 |
| 2 | Mirko Giansanti | Aprilia | +0 s 037 | 4 | 20 |
| 3 | Steve Jenkner | Aprilia | +1 s 033 | 13 | 16 |
| 4 | Lucio Cecchinello | Aprilia | +6 s 701 | 3 | 13 |
| 5 | Andrea Dovizioso | Honda | +8 s 594 | 8 | 11 |
| 6 | Youichi Ui | Aprilia | +8 s 940 | 18 | 10 |
| 7 | Pablo Nieto | Aprilia | +9 s 083 | 11 | 9 |
| 8 | Daniel Pedrosa | Honda | +22 s 993 | 2 | 8 |
| 9 | Thomas Lüthi | Honda | +33 s 708 | 17 | 7 |
| 10 | Gino Borsoi | Aprilia | +34 s 234 | 20 | 6 |
| 11 | Mika Kallio | Honda | +34 s 234 | 34 | 5 |
| 12 | Simone Corsi | Honda | +35 s 245 | 28 | 4 |
| 13 | Max Sabbatani | Aprilia | +35 s 818 | 6 | 3 |
| 14 | Gabor Talmacsi | Aprilia | +35 s 945 | 23 | 2 |
| 15 | Gioele Pellino | Aprilia | +35 s 945 | 22 | 1 |
| 16 | Fabrizio Lai | Malaguti | +42 s 964 | 21 | |
| 17 | Masao Azuma | Honda | +43 s 063 | 30 | |
| 18 | Álvaro Bautista | Aprilia | +51 s 526 | 19 | |
| 19 | Julián Simón | Malaguti | +57 s 880 | 24 | |
| 20 | Toshihisa Kuzuhara | Honda | +58 s 129 | 25 | |
| 21 | Marco Simoncelli | Aprilia | +58 s 412 | 15 | |
| 22 | Mike Di Meglio | Aprilia | +1 min 16 s 078 | 33 | |
| 23 | Roberto Locatelli | KTM | +1 min 17 s 164 | 27 | |
| 24 | Imre Tóth | Honda | +1 min 21 s 140 | 31 | |
| 25 | Chris Martin | Aprilia | +1 min 21 s 384 | 32 | |
| 26 | Leon Camier | Honda | +1 min 56 s 001 | 36 | |
| 27 | Akio Tanaka | Honda | +1 tour | 37 | |
| Abd. | Shuhei Aoyama | Honda | Abandon | 12 | |
| Abd. | Peter Lenart | Honda | Abandon | 35 | |
| Abd. | Casey Stoner | Aprilia | Abandon | 7 | |
| Abd. | Stefano Bianco | Gilera | Abandon | 10 | |
| Abd. | Jorge Lorenzo | Derbi | Abandon | 29 | |
| Abd. | Alex De Angelis | Aprilia | Abandon | 1 | |
| Abd. | Arnaud Vincent | KTM | Abandon | 16 | |
| Abd. | Emilio Alzamora | Derbi | Abandon | 14 | |
| Abd. | Héctor Barberá | Aprilia | Abandon | 9 | |
| Abd. | Sadahito Suma | Honda | Abandon | 26 | |