William Callaghan may refer to:
- William M. Callaghan (1897–1991), United States Navy officer
- Willie Callaghan (footballer, born 1941), Scottish footballer (Aberdeen FC)
- Willie Callaghan (footballer, born 1943), Scottish footballer (Dunfermline Athletic, Berwick Rangers, Cowdenbeath FC, national team)
- Willie Callaghan (footballer, born 1967), Scottish footballer (Dunfermline Athletic, Walsall FC, Montrose FC, Livingston FC)
- Bill Callaghan (born 1948), British economist
See also
edit- Bill Callihan (1916–1986), American football running back
- William O'Callaghan (disambiguation)
- William Callahan (disambiguation)