| John Fenlon | |
| Birth Date: | 7 December 1909 |
| Player Sport1: | Football |
| Player Years2: | 1930–1933 |
| Player Team2: | George Washington |
| Player Sport3: | Basketball |
| Player Years4: | 1930–1933 |
| Player Team4: | George Washington |
| Player Sport5: | Baseball |
| Player Years6: | 1932–1933 |
| Player Team6: | George Washington |
| Coach Sport1: | Football |
| Coach Years2: | 1938–1941 |
| Coach Team2: | Richmond (assistant) |
| Coach Years3: | 1942 |
| Coach Team3: | Richmond |
| Coach Years4: | 1946–1947 |
| Coach Team4: | Richmond |
| Overall Record: | 12–15–3 |
John Llewellyn Fenlon (December 7, 1909 – September 2, 2000) was an American college football coach. He served as the head football coach at the University of Richmond in 1942 and again from 1946 to 1947, compiling a record of 12–15–3. Fenlon attended George Washington University, where he lettered in football, basketball, and baseball in the early 1930s. He died on September 2, 2000.[1]