| Event: | Water polo |
| Games: | 1966 Asian Games |
| Venue: | Chula Swimming Stadium |
| Dates: | 13–17 December 1966 |
| Nations: | 5 |
| Prev: | 1962 |
| Next: | 1970 |
Water polo was contested for men only at the 1966 Asian Games in Chula Swimming Stadium, Bangkok, Thailand from 13 to 17 December 1966.
Japan won the gold medal in round robin competition, Singapore won the silver medal and Indonesia 1962 silver medalists this time won the bronze medal.
| Men | Tadashi Fujimoto Tetsunosuke Ishii Hirokatsu Kuwayama Koji Nakano Seiya Sakamoto Haruo Sato Yoji Shimizu Taira Sugawara Einosuke Sumitani Kazuya Takeuchi Takashi Yokoyama | Gan Eng Guan Gan Eng Joo Gan Eng Teck Lim Ting Khiang Pang Tee Ann Su Hong Zee Tan Eng Bock Tan Eng Liang Tan Thuan Heng Tan Yam Cheng Thio Gim Hock | valign=top |
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| width=40 | Rank | width=180 | Team | width=30 | width=30 | width=30 | width=30 | ||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 4 | 4 | 0 | 0 | ||||||||
| 4 | 3 | 0 | 1 | ||||||||
| 4 | 2 | 0 | 2 | ||||||||
| 4 | 4 | 1 | 0 | 3 | |||||||
| 5 | 4 | 0 | 0 | 4 |