Nawapol Thamrongrattanarit (Thai: นวพล ธำรงรัตนฤทธิ์, RTGS: Nawaphon Thamrongrattanarit; born 4 February 1984) is a Thai writer, screenwriter and film director. His notable work are "Mary Is Happy, Mary Is Happy" and "Heart Attack" which has won several awards in the Suphannahong National Film Awards. ()