Morris Edward Opler (May 3, 1907 – May 13, 1996), American anthropologist and advocate of Japanese American civil rights, was born in Buffalo, New York. He was the brother of Marvin Opler, an anthropologist and social psychiatrist. Opler earned his Ph.D. from the University of Chicago in 1933. He taught at Reed College in Portland, Oregon, and the Claremont Colleges in Claremont, California, during the 1940s and later taught at Cornell University and the University of Oklahoma.