William Callahan

William Callahan may refer to:

*William A. Callahan, Canadian political scientist *William F. Callahan (1891–1964), chairman of the Massachusetts Turnpike Authority **Callahan Tunnel or William F. Callahan Tunnel, a Boston Harbor tunnel *William P. Callahan (born 1950), American Roman Catholic bishop *William R. Callahan (state representative) (1925–1976), Massachusetts state representative *William R. Callahan (priest) (1931–2010), American Roman Catholic priest *William Roger Callahan (1931–2022), journalist and politician in Newfoundland, Canada *William J. Callahan, Deputy Director of the United States Secret Service

Bill Callahan may refer to: *Bill Callahan (American football) (born 1956), American football coach *Bill Callahan (defensive back) (born 1964), American football player *Bill Callahan (musician) (born 1966), American singer-songwriter *Bill Callahan (TV producer), former producer and writer for ''Scrubs'' Provided by Wikipedia