| Event: | Taekwondo |
| Games: | 1986 Asian Games |
| Venue: | Sungkyunkwan University |
| Dates: | 30 September – 3 October 1986 |
| Competitors: | 84 |
| Nations: | 17 |
| Next: | 1994 |
Taekwondo took place from September 30 to October 3 at the 1986 Asian Games in Sungkyunkwan University, Seoul, South Korea. Men's competitions were held in eight weight categories. The host nation, South Korea, dominated the competition, winning seven out of eight possible gold medals.
| P | Preliminary rounds | F | Final |
| Event↓/Date → | 30th Tue | 1st Wed | 2nd Thu | 3rd Fri | |||||
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| Finweight (−50 kg) | |||
| Flyweight (−54 kg) | |||
| Bantamweight (−58 kg) | |||
| Featherweight (−64 kg) | |||
| Lightweight (−70 kg) | |||
| Welterweight (−76 kg) | |||
| Middleweight (−83 kg) | |||
| Heavyweight (+83 kg) | |||
A total of 84 athletes from 17 nations competed in taekwondo at the 1986 Asian Games: