Piya Vimuktayon (other names: Ex, Chulalongkorn Memorial Day, Wan Piyamaharaj) is a Thai actor and model who is active in the Thai television industry. He debuted himself as an actor in the television industry in 2004 in a supporting role in the series "Nang Sao Jing Jai Kub Nai San Dee", since then he is active in the Thai entertainment industry.