| Olan Ruble | |
| Birth Date: | 17 February 1906 |
| Birth Place: | Clinton, Iowa, U.S. |
| Death Place: | Wheaton, Illinois, U.S. |
| Player Sport1: | Football |
| Player Years2: | 1924–1927 |
| Player Team2: | Simpson (IA) |
| Player Sport3: | Basketball |
| Player Years4: | 1924–1928 |
| Player Team4: | Simpson (IA) |
| Coach Sport1: | Football |
| Coach Years2: | 1942–1948 |
| Coach Team2: | Iowa Wesleyan |
| Coach Sport3: | Basketball |
| Coach Years4: | 1930 |
| Coach Team4: | Mingo HS (IA) |
| Coach Years5: | 1941–1947 |
| Coach Team5: | Iowa Wesleyan |
| Coach Sport6: | Baseball |
| Coach Years7: | 1943–1949 |
| Coach Team7: | Iowa Wesleyan |
| Admin Years1: | 1941–1949 |
| Admin Team1: | Iowa Wesleyan |
| Overall Record: | 15–23–1 (college football) 39–60 (college basketball) |
Olan Guy Ruble (February 17, 1906 – November 11, 1982) was an American football, basketball, and baseball coach and college athletics administrator.[1] He served as the head football coach at Iowa Wesleyan College from 1942 to 1948. Ruble was also the head basketball coach at Iowa Wesleyan from 1941 to 1947 and the school's head baseball coach from 1943 to 1949.[2]