2003 Japanese motorcycle Grand Prix 250cc classification 250cc classification

| Rider | Manufacturer | Laps | Time_Retired | Grid |
|---|---|---|---|---|
| Manuel Poggiali | Aprilia | 19 | 41:36.284 | 23 |
| Hiroshi Aoyama | Honda | 19 | +1.373 | 1 |
| Yuki Takahashi | Honda | 19 | +1.496 | 7 |
| Sebastián Porto | Honda | 19 | +1.700 | 6 |
| Franco Battaini | Aprilia | 19 | +11.771 | 16 |
| Fonsi Nieto | Aprilia | 19 | +13.220 | 9 |
| Roberto Rolfo | Honda | 19 | +13.497 | 4 |
| Naoki Matsudo | Yamaha | 19 | +14.027 | 5 |
| Tekkyu Kayoh | Yamaha | 19 | +24.546 | 12 |
| Sylvain Guintoli | Aprilia | 19 | +42.722 | 8 |
| Alex Debón | Honda | 19 | +43.246 | 3 |
| Erwan Nigon | Aprilia | 19 | +47.871 | 21 |
| Joan Olivé | Aprilia | 19 | +1:09.405 | 30 |
| Johan Stigefelt | Aprilia | 19 | +1:09.779 | 13 |
| Jakub Smrž | Honda | 19 | +1:21.048 | 10 |
| Eric Bataille | Honda | 19 | +1:21.788 | 28 |