The 2003 Asian Judo Championships were held in Jeju, South Korea from 31 October to 1 November 2003.
| Extra lightweight −60 kg | |||
| Half lightweight −66 kg | |||
| Lightweight −73 kg | |||
| Half middleweight −81 kg | |||
| Middleweight −90 kg | |||
| Half heavyweight −100 kg | |||
| Heavyweight +100 kg | |||
| Openweight | |||
| Extra lightweight −48 kg | |||
| Half lightweight −52 kg | |||
| Lightweight −57 kg | |||
| Half middleweight −63 kg | |||
| Middleweight −70 kg | |||
| Half heavyweight −78 kg | |||
| Heavyweight +78 kg | |||
| Openweight | |||