John Courtney

John or Jack Courtney may refer to:


 * John Edgar Courtney (born 1934), Australian ornithologist
 * J. Ira Courtney (1888–1968), American athlete
 * John Mortimer Courtney (1838–1920), Canadian civil servant
 * John Courtney (MP), Member of Parliament (MP) for Bodmin
 * John Courtney (diarist) (1734–1806), of Beverley, Yorkshire, England
 * John Courtney (playwright) (1804–1865), playwright, dramatic actor and comedian
 * Jack Courtney (figure skater) (born 1953), American pair skater
 * Jack Courtney (rugby league) (1901–1948), Australian rugby league player