Jack Barnes

Jack Barnes may refer to:


 * Jack Barnes (politician) (born 1940), American communist and the National Secretary of the Socialist Workers Party
 * Jack Barnes (English footballer) (1908–2008), English association footballer
 * Jack Barnes (Australian footballer) (1905–1999), Australian rules footballer
 * Jack Barnes (rugby league), English rugby league player
 * Jack Barnes (toxinologist) (1922–1985), Australian toxinologist