Roger S. Fouts (born June 8, 1943) is a retired American primate researcher. He was co-founder and co-director of the Chimpanzee and Human Communication Institute (CHCI) in Washington, and a professor of psychology at the Central Washington University. He is best known for his role in teaching Washoe the chimpanzee to communicate using a set of signs taken from American sign language. He is married to Deborah Fouts, who was the co-director and co-founder of CHCI.