| Event: | Water polo |
| Games: | 1986 Asian Games |
| Venue: | Jamsil Indoor Swimming Pool |
| Dates: | 27 September – 2 October 1986 |
| Nations: | 6 |
| Prev: | 1982 |
| Next: | 1990 |
Water polo was contested for men only at the 1986 Asian Games at the Jamsil Indoor Swimming Pool, Seoul, South Korea from 27 September to 2 October 1986.
China won the gold medal in round robin competition with a perfect record, South Korea finished second with the silver medal, Singapore won the bronze by better goal difference comparing to the 4th placed team Iran.
| Men | Cai Shengliu Cai Tianxiong Deng Jun Ge Jianqing Guan Shishi Huang Long Li Jianxiong Lin Jun Tang Xiaoyu Wang Minhui Wang Xiaotian Yang Yong Zhao Bilong | Choi Jang-jin Choi Ki-cheol Choi Seon-yong Kim Jae-yeon Kim Jin-tae Kim Jung-yeol Kim Ki-chun Lee Jung-seok Lee Tae-chang Lee Taek-won Mun Kong-yeob Park Sang-won Song Seung-ho | Ang Ban Leong Ang Kiat Wee Choo Chin Cheng Edison Foo Alan Heng Tony Koh Leong Hoe Yin Lim Teck Yin Tan Hong Boon Tay Thiam Hua Teo Keng Soon Teo Yong Khoon Daniel Wee |
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| width=40 | Rank | width=180 | Team | width=30 | width=30 | width=30 | width=30 | ||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 5 | 5 | 0 | 0 | ||||||||
| 5 | 4 | 0 | 1 | ||||||||
| 5 | 2 | 1 | 2 | ||||||||
| 4 | 5 | 2 | 1 | 2 | |||||||
| 5 | 5 | 1 | 0 | 4 | |||||||
| 6 | 5 | 0 | 0 | 5 |