2002 Japanese motorcycle Grand Prix 125cc classification 125cc classification

| Rider | Manufacturer | Laps | Time_Retired | Grid |
|---|---|---|---|---|
| Mattia Angeloni | Gilera | 18 | +2:14.164 | 37 |
| Imre Tóth | Honda | 18 | +2:17.104 | 36 |
| Sunathai Chaemsap | Honda | 18 | +2:35.641 | 23 |
| Stefano Bianco | Aprilia | 15 | Accident | 20 |
| Toshihisa Kuzuhara | Honda | 14 | Accident | 22 |
| Jakub Smrž | Honda | 13 | Accident | 26 |
| Youichi Ui | Derbi | 12 | Accident | 10 |
| Chaz Davies | Aprilia | 12 | Accident | 27 |
| Jaroslav Huleš | Aprilia | 7 | Accident | 4 |
| Andrea Ballerini | Honda | 7 | Accident | 30 |
| Mika Kallio | Honda | 7 | Accident | 31 |
| Masao Azuma | Honda | 6 | Accident | 6 |
| Andrea Dovizioso | Honda | 6 | Accident | 28 |
| Gábor Talmácsi | Italjet | 5 | Retirement | 21 |
| Michel Fabrizio | Gilera | 5 | Retirement | 35 |
| Jarno Müller | Honda | 5 | Accident | 16 |
| Hideyuki Ogata | Honda | 4 | Accident | 32 |