John, Johnny, Jack, or Jackie Mooney may refer to:
Sports J. D. Mooney (John David Mooney, 1901–1966), American jockey and trainer John J. Mooney (horse racing) (1924–1994), Canadian horse racing executive Johnny Mooney (footballer) (1926–2000), Scottish footballer Jackie Mooney (1938–2017), Irish soccer player Johnny Mooney (born 1958), Irish Gaelic footballer John Mooney (canoeist) (born 1964), American sprint canoer John Mooney (cricketer) (born 1982), Irish cricketer John Mooney (basketball) (born 1998), American basketball player
Others John Mooney (historian) (1862–1950), Scottish historian Sir John Mooney (Irish politician) (1874–1934) John J. Mooney (1929–2020), American chemical engineer John Mooney (Canadian politician) (1933–2003) John Mooney (musician) (born 1955), American blues guitarist John Mooney (activist) (born 1966), American trade union leader John David Mooney, American artist