Leo Cahill
| Nickname(s) | Leo The Lip | 
|---|---|
| Born: | July 30, 1928 Utica, Illinois, U.S. | 
| Died: | February 15, 2018 (aged 89) Atlanta, Georgia, U.S. | 
| Career history | |
| As coach | |
| 1953 | Illinois (freshman assistant) | 
| 1954–1955 | Lewis (line) | 
| 1956–1957 | Toledo (line) | 
| 1958–1959 | South Carolina (assistant) | 
| 1960–1964 | Montreal Alouettes (assistant) | 
| 1965–1966 | Toronto Rifles | 
| 1967–1972 | Toronto Argonauts | 
| 1977–1978 | Toronto Argonauts | 
| As general manager | |
| 1974 | Memphis Southmen | 
| 1975 | Chicago Winds | 
| 1986–1988 | Toronto Argonauts | 
| 1996 | Ottawa Rough Riders | 
| Career highlights and awards | |
| 
 | |
| Awards | Annis Stukus Trophy (1971) | 
| Honours | Ontario Sports Hall of Fame (2013) | 
| Military career | |
| Allegiance | United States | 
| Branch | United States Army | 
| Conflict | Korean War | 
Leo Cahill (July 30, 1928 – February 15, 2018) was an American head coach and general manager in the Canadian Football League (CFL), much of it spent with the Toronto Argonauts.