John Halligan

John or Johnny Halligan may refer to:
 * John Halligan Jr. (1876–1934), U.S. admiral
 * John Halligan (ice hockey) (c.1942–2010), New York Rangers public relations director and NHL executive
 * John Halligan (politician), Irish politician from Waterford, Ireland
 * Johnny Halligan, Scottish footballer (Hibernian FC)