Jack O'Connor may refer to:
Sportspeople Jack O'Connor (Australian footballer) (1900–1983), Australian footballer Jack O'Connor (Canadian football), Canadian football player and coach Jack O'Connor (Gaelic footballer) (born 1960), former Kerry player and manager Jack O'Connor (rugby union) (1906–1980), rugby union player who represented Australia
Baseball Jack O'Connor (catcher) (1866–1937), baseball catcher and manager Jack O'Connor (pitcher) (born 1958), baseball pitcher
Cricket Jack O'Connor (Australian cricketer) (1875–1941), Australian cricketer Jack O'Connor (English cricketer) (1897–1977), English cricketer
Hurling Jack O'Connor (Cork hurler) (born 1998), Irish hurler Jack O'Connor (Wexford hurler) (born 1995), Irish hurler
Other people Jack O'Connor (trade unionist) (born 1957), Irish trade union leader Jack O'Connor (writer) (1902–1978), American author and outdoorsman
See also John O'Connor (disambiguation) Jack Connor (disambiguation) Connor (surname)