John Caulfield

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