Boonthung Srisung (born 30 May 1981) is a Thai long-distance runner. He qualified for the 2016 Summer Olympics in Rio de Janeiro, and represented Thailand in the men's marathon. He finished in 133rd place with a time of 2:37.46. He was the flag bearer for Thailand during the closing ceremony. At the 2013 Southeast Asian Games he won silver medals in both 5000 metres and 10,000 metres.