| 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.