Ralph S. Singleton is an American film and television producer and director, known for his work in the entertainment industry. He has been involved in various projects, contributing to both the creative and production aspects of filmmaking. Singleton's career spans several decades, during which he has collaborated with numerous talented individuals. One of his notable works includes the production of the film The Last House on the Left, which has gained a cult following over the years. Singleton's contributions to the horror genre have made him a recognized figure among fans and professionals alike.