Sutthisak Singkhon is a Thai decathlete. 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.

The 2017 Asian Athletics Championships was the 22nd edition of the Asian Athletics Championships. It was held from 6 to 9 July 2017 at the Kalinga Stadium in Bhubaneswar, India. Bhubaneswar was the third Indian city to host Asian Championships. Around 560 athletes from 41 countries attended the event.