Yodtong Siriwalak often known by his Muay Thai ring name Yodtong Senanan is a professional Muay Thai fighter, trainer, and owner of the Sityodtong Muay Thai Camp in Chonburi, Thailand, who produced 57 Muay Thai Champions, the most number in the history of Muay Thai in Thailand. Award for the Best Muay Thai Trainer in the Nation, conferred by Princess Sirindhorn on 11 May 1991, Highest Honor in Muay Thai from the International Federation of Amateur Muay Thai Associations are considered as his highest awards throughout his career.
Yodtong Siriwalak was a son of a Chinese immigrant from Hainan, born in a family with 6 siblings, 4 brothers and 2 sisters. He began training in Muay Thai at his age of 14 under Kru Sithidet Samanachan and had his first fight at 15. He then left for the Senanan camp and received instructions from Kru Suwan Senanan. He kept on fight professionally until the age of twenty-one. Yodtong also establised his own camp in 1959 at Mabtapud municipality, Rayong province.
Kru Yodtong Senanan was retired and resided in Chonburi province, Thailand until his death in 2013.