William Thomas Callaghan (born 12 February 1943 in Cowdenbeath) is a Scottish former professional footballer, who played for Dunfermline Athletic, Berwick Rangers, Cowdenbeath and Scotland. Callaghan played for Dunfermline for most of his club career, playing in two Scottish Cup Finals, losing 3–2 to Celtic in 1965 and winning 3–1 against Hearts in 1968. In all he made 426 appearances for the Pars, including 34 in European competition, a club record. Willie's brother Tommy Callaghan also played for Dunfermline, and they are the last pair of brothers to have played the full 90 minutes together in the same Scottish Cup-winning side as of 2009,- In 2008, Callaghan was inducted into Dunfermline Athletic's hall of fame.