Warren Lewis is an American film producer and screenwriter. He is best known for his screenwriting contributions on the films Black Rain (1989, directed by Ridley Scott) and The 13th Warrior (1999, directed by John McTiernan). He also worked as an assistant film director on Boaz Davidson's Hospital Massacre (1982), Penelope Spheeris' The Boys Next Door (1985) and McTiernan's directorial debut film Nomads (1986).
In 2000, Lewis married Constance Young, a sales associate at Diamond Foam and Fabric, a retail store located in Los Angeles. Lewis is a graduate of New York University.