| Event: | Men's 66 kg |
| Games: | 1998 Asian Games |
| Venue: | Thammasat Gymnasium 1 |
| Date: | 7 December 1998 |
| Competitors: | 16 |
| Nations: | 16 |
| Gold: | Yukimasa Nakamura |
| Goldnoc: | JPN |
| Silver: | Ivan Baglayev |
| Silvernoc: | KAZ |
| Bronze: | Erdenebaataryn Uuganbayar |
| Bronzenoc: | MGL |
| Bronze2: | Arash Miresmaeili |
| Bronzenoc2: | IRI |
| Prev: | 1994 |
| Next: | 2002 |
See main article: Judo at the 1998 Asian Games.
The men's 66 kilograms (Half lightweight) competition at the 1998 Asian Games in Bangkok was held on 7 December 1998 at the Thammasat Gymnasium 1.
All times are Indochina Time
| width=220 | Date | width=50 | Time | width=100 | Event |
|---|---|---|---|---|---|
| Monday, 7 December 1998 | 14:00 | Round 1 | |||
| 14:00 | Quarterfinals | ||||
| 14:00 | Repechage | ||||
| 14:00 | Semifinals | ||||
| 14:00 | Finals |