John or Jack Norris may refer to:
Law and politics
John Norris (died 1577), MP for Downton, Taunton and Bodmin
Sir John Norris (Royal Navy officer) (1670/71–1749), British admiral, Member of Parliament for Rye and Portsmouth
John Norris (1685–1752), Member of Parliament for Chippenham
John Norris (1702–1767), Member of Parliament for Rye
John Norris (1721–1786), High Sheriff of Buckinghamshire
John Norris (born 1740), Member of Parliament for Rye
John Thomas Norris (1808–1870), MP for Abingdon
Sports
Jack Norris (footballer) (1923–2015), Australian rules footballer
Jack Norris (ice hockey) (born 1942), Canadian ice hockey player
Jac Norris (born 2006), Welsh footballer
Others
John Norris (soldier) or Norreys (ca. 1547–1597), English soldier
John Norris (philosopher) (1657–1711), English philosopher and poet
John Norris (1721–1786), English merchant and member of the Hellfire Club
John S. Norris (1804–1876), American architect
John Norris (priest) (1823–1891), English archdeacon
J. Frank Norris (John Franklyn Norris, 1877–1952), American fundamentalist preacher
John Norris (publisher) (1934–2010), Canadian publisher, editor, music critic, and record producer
John Norris (reporter) (born 1959), American music journalist
Jack Norris (activist) (born 1967), American dietitian and animal rights activist