| Event: | Men's 100 kg |
| Games: | 1998 Asian Games |
| Venue: | Thammasat Gymnasium 1 |
| Date: | 10 December 1998 |
| Competitors: | 11 |
| Nations: | 11 |
| Gold: | Kosei Inoue |
| Goldnoc: | JPN |
| Silver: | Armen Bagdasarov |
| Silvernoc: | UZB |
| Bronze: | Farhad Maabi |
| Bronzenoc: | IRI |
| Bronze2: | Park Sung-keun |
| Bronzenoc2: | KOR |
| Prev: | 1994 |
| Next: | 2002 |
See main article: Judo at the 1998 Asian Games.
The men's 100 kilograms (Half heavyweight) competition at the 1998 Asian Games in Bangkok was held on 10 December 1998 at the Thammasat Gymnasium 1.
All times are Indochina Time
| width=220 | Date | width=50 | Time | width=100 | Event |
|---|---|---|---|---|---|
| Thursday, 10 December 1998 | 14:00 | Round 1 | |||
| 14:00 | Quarterfinals | ||||
| 14:00 | Repechage | ||||
| 14:00 | Semifinals | ||||
| 14:00 | Finals |