William Callaghan (disambiguation)

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