Hisayasu Satō is a Japanese exploitation film director. He has worked prolifically in the genre of pinku eiga films, which refers to Japanese films that prominently feature nudity or sexual content. His best-known works are the 1992 pink film The Bedroom and the 1996 V-Cinema splatter film Splatter: Naked Blood. He is known for his "sledgehammer" filmmaking style, and using his exploitation career to tackle serious subjects like obsession, alienation, perversion and voyeurism.