The men's triathlon was part of the Triathlon at the 2018 Asian Games program, was held in JSC Lake Jakabaring on 1 September 2018.

The race was held over the "international distance" and consisted of 1,500 metres (0.93 mi) swimming, 40 kilometres (25 mi) road bicycle racing, and 10 kilometres (6.2 mi) road running.

[1] Jumpei Furuya of Japan won the gold medal after finished in a time of 1 hour 49 minutes 43 seconds.

The silver and bronze medals were earned by Ayan Beisenbayev from Kazakhstan and Li Mingxu from China respectively.

[2] All times are Western Indonesia Time (UTC+07:00)