Pen-ek Ratanaruang is a Thai film director and screenwriter. He is best known for his arthouse work, Last Life in the Universe, and is considered to be one of Thai cinema's leading "new wave" auteurs,

Samui Song is 2017 Thai noir crime thriller drama film directed and written by Pen-Ek Ratanaruang, and starring Chermarn Boonyasak and David Asavanond. It is his ninth feature film and tenth overall.