| Pete Butler | |
| Birth Date: | 1909 |
| Death Date: | January 26, 1983 |
| Player Sport1: | Baseball |
| Player Years2: | 1930–1931 |
| Player Team2: | Colorado State Teachers |
| Coach Sport1: | Football |
| Coach Years2: | 1940–? |
| Coach Team2: | Colorado State Teachers (assistant) |
| Coach Sport3: | Basketball |
| Coach Years4: | 1940–1943 |
| Coach Team4: | Colorado State Teachers |
| Coach Years5: | 1945–1956 |
| Coach Team5: | Colorado State Teachers |
| Coach Sport6: | Baseball |
| Coach Years7: | 1941–1967 |
| Coach Team7: | Colorado State Teachers |
| Admin Years1: | 1934–1940 |
| Admin Team1: | New Mexico Mines |
| Overall Record: | 151–133 (basketball) 417–153–2 (baseball) |
| Championships: | Baseball 25 RMC (1941–1942, 1945–1967) |
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.[1]