John Martyn (1948–2009) was a Scottish singer-songwriter.
John Martyn may also refer to:
John Martyn (academic) (died 1473), master of University College, Oxford, England John Martyn (botanist) (1699–1768), British botanist and author of Historia plantarum rariorum John Martyn (publisher) (died 1680), London publisher and bookseller John Martyn (schoolmaster) (1903–1984), second headmaster of The Doon School, India John Burton Martyn (1867–1921), Ontario physician and political figure John Martyn (Leicester MP), MP for Leicester John Martyn (died 1627), MP for Nottingham John Martyn (MP for Scarborough), MP for Scarborough John Martyn (MP for Wycombe), for Wycombe John Martyn (priest), Dean of Bangor from 1371 to 1382 Johnny Martyn (1934–2007), musician and coffee bar manager
See also John Martin (disambiguation) J. Thomas Marten (born 1951), American judge