Sutthisak Singkhon (Thai: สุทธิศักดิ์ สิงขร; born 5 October 1996) is a Thai decathlete.

[2] He competed at the 2017 World Championships dropping out after four events.

Earlier that year, he won the gold medal at the 2017 Asian Championships, where he set a national record.

He won a silver medal at the 2018 Asian Games.

This biographical article relating to Thai athletics is a stub.