John Caulfield may refer to: H. John Caulfield (1936–2012), American physicist John Caulfield (Australian footballer) (1944–2006), Australian rules footballer John Caulfield (diplomat), American diplomat John Caulfield (colonist of Victoria) (1808–1879), included in The Explorers and Early Colonists of Victoria John Caulfield (Irish footballer) (born 1964), former Irish footballer and current manager Jack Caulfield (1929–2012), American security operative and law enforcement officer in the Nixon administration See also John Caulfeild (1661–1707), Irish soldier and politician John Caulfeild (priest) (1738–1816), Anglican priest in Ireland