Louis C. "Pete" Butler (1909 – January 26, 1983) was an American football, basketball, and baseball coach and college athletics administrator. He served as the head baseball coach at Colorado State College of Education—now known as the University of Northern Colorado—from 1941 to 1967, compiling a record of 416–154–2. Butler was also the school's head basketball coach from 1940 to 1943 and again from 1945 to 1956, tally mark of 151–133. His baseball teams won 25 consecutive Rocky Mountain Athletic Conference championships.