| Event: | Judo |
| Games: | 1986 Asian Games |
| Venue: | Saemaul Sports Hall |
| Dates: | 1–4 October 1986 |
| Next: | 1990 |
The Judo competition at the 1986 Asian Games was held at Saemaul Sports Hall from 1 to 4 October 1986 and contested in eight weight classes, for only men. This was the first competition of Judo for Asian Games.
The host nation South Korea dominated the competition winning six out of eight possible gold medals.
| Extra lightweight (−60 kg) | |||
| Half lightweight (−65 kg) | |||
| Lightweight (−71 kg) | |||
| Half middleweight (−78 kg) | |||
| Middleweight (−86 kg) | |||
| Half heavyweight (−95 kg) | |||
| Heavyweight (+95 kg) | |||
| Openweight | |||