ChaiwatThongsaeng (Nickname: Tob), also known as Kritkong Thongsaeng, is an actor and model, born in Pathum Thani, Thailand. In 2008, he was nominated for Best Supporting Actor at the Thailand National Film Association Awards for his role in the film Bangkok Love Story. Also in 2008, Tob Chaiwat took part in bodybuilding competitions and later represented Thailand in the Mister International 2010 contest.