William Callaghan (disambiguation)
William Callaghan may refer to:
- William M. Callaghan (1897–1991), United States Navy officer
- Willie Callaghan (born 1943), Scottish footballer
- Willie Callaghan (footballer, born 1967), his son, Scottish footballer
- Bill Callaghan (born 1948), British economist
- Bill Callaghan (Beefeater), Yeoman Warder at HM Tower of London
See also
- William O'Callaghan (disambiguation)
- William Callahan (disambiguation)