| 2003 MotoGP™ World Championship Round 1 SKYY VODKA Grand Prix of Japan DATE: 2003-04-04 WEATHER: Cloudy COURSE: Dry International Racing Course |
| Free1｜Qualifying1｜Free2｜Qualifying2｜Combined｜WarmUp｜GRID｜RACE |
| MotoGP™ Free Practice 1 |
| Pos | No | Rider | Nat. | Type | Team | Time | Delay | Gap | Lap |
| 1 | 65 | LORIS CAPIROSSI | ITA | Ducati | Ducati Marlboro Team | 2'04.604 | 9/11 | ||
| 2 | 46 | VALENTINO ROSSI | ITA | Honda | RepsolHonda | 2'04.623 | 0.019 | 0.019 | 15/19 |
| 3 | 74 | DAIJIRO KATO | JPN | Honda | TelefonicaMovistarHonda | 2'04.879 | 0.275 | 0.256 | 13/18 |
| 4 | 11 | TOHRU UKAWA | JPN | Honda | CamelPramacPons | 2'04.958 | 0.354 | 0.079 | 12/20 |
| 5 | 15 | Sete Gibernau | SPA | Honda | TelefonicaMovistarHonda | 2'05.101 | 0.497 | 0.143 | 15/18 |
| 6 | 4 | ALEX BARROS | BRA | Yamaha | Gauloises Yamaha Team | 2'05.339 | 0.735 | 0.238 | 7/17 |
| 7 | 41 | NORiyuki HAGA | JPN | Aprilia | AliceApriliaRacing | 2'05.767 | 1.163 | 0.428 | 16/16 |
| 8 | 45 | COLIN EDWARDS | USA | Aprilia | AliceApriliaRacing | 2'05.852 | 1.248 | 0.085 | 15/18 |
| 9 | 21 | JOHN HOPKINS | USA | Suzuki | Suzuki Grand Prix Team | 2'05.880 | 1.276 | 0.028 | 20/20 |
| 10 | 3 | MAX BIAGGI | ITA | Honda | CamelPramacPons | 2'05.975 | 1.371 | 0.095 | 11/18 |
| 11 | 12 | TROY BAYLISS | AUS | Ducati | Ducati Marlboro Team | 2'06.247 | 1.643 | 0.272 | 18/19 |
| 12 | 56 | SHINYA NAKANO | JPN | Yamaha | D'Antin Yamaha Team | 2'06.262 | 1.658 | 0.015 | 15/19 |
| 13 | 19 | OLIVIER JACQUE | FRA | Yamaha | Gauloises Yamaha Team | 2'06.264 | 1.660 | 0.002 | 11/19 |
| 14 | 6 | MAKOTO TAMADA | JPN | Honda | PramacHonda | 2'06.309 | 1.705 | 0.045 | 5/15 |
| 15 | 7 | CARLOS CHECA | SPA | Yamaha | Fortuna Yamaha Team | 2'06.315 | 1.711 | 0.006 | 17/18 |
| 16 | 69 | NICKY HAYDEN | USA | Honda | RepsolHonda | 2'06.534 | 1.930 | 0.219 | 6/16 |
| 17 | 10 | KENNY ROBERTS | USA | Suzuki | Suzuki Grand Prix Team | 2'06.645 | 2.041 | 0.111 | 10/16 |
| 18 | 17 | NORICK ABE | JPN | Yamaha | Yamaha Racing Team | 2'06.683 | 2.079 | 0.038 | 19/19 |
| 19 | 9 | NOBUATSU AOKI | JPN | ProtonKR | ProtonTeamKR | 2'07.078 | 2.474 | 0.395 | 20/20 |
| 20 | 88 | ANDREW PITT | AUS | Kawasaki | Kawasaki Racing Team | 2'07.391 | 2.787 | 0.313 | 16/16 |
| 21 | 48 | AKIRA YANAGAWA | JPN | Kawasaki | Kawasaki Racing Team | 2'07.505 | 2.901 | 0.114 | 12/17 |
| 22 | 33 | MARCO MELANDRI | ITA | Yamaha | Fortuna Yamaha Team | 2'07.615 | 3.011 | 0.110 | 7/8 |
| 23 | 25 | TAMAKI SERIZAWA | JPN | Moriwaki | Moriwaki Racing WCM | 2'07.823 | 3.219 | 0.208 | 15/15 |
| 24 | 8 | GARRY McCOY | AUS | Kawasaki | Kawasaki Racing Team | 2'07.920 | 3.316 | 0.097 | 16/16 |
| 25 | 99 | JEREMY McWILLIAMS | GBR | ProtonKR | ProtonTeamKR | 2'08.735 | 4.131 | 0.815 | 17/18 |
| 26 | 35 | CHRIS BURNS | GBR | Harris | WCM | 2'09.442 | 4.838 | 0.707 | 13/18 |
