John Ireland (1914–1992) was a Canadian-American actor and film director.
John Ireland may also refer to:
- John de Courcy Ireland (1911–2006), Irish historian and activist
- John Ireland (bishop) (1838–1918), Irish-born American Catholic bishop
- John Ireland (composer) (1879–1962), English composer
- John Ireland (cricketer) (1888–1970), English amateur cricketer
- John Ireland (philatelist) (1882–1965), British philatelist
- John Ireland (pirate) (fl. 1694–1701), American pirate
- John Ireland (politician) (1827–1896), American politician
- John Ireland (Anglican priest) (1761–1842), English Anglican priest and philanthropist
- John Ireland (South African musician) (born 1954), South African pop musician
- John Ireland (sportscaster) (born 1963), American sportscaster
- John Ireland (theologian) (fl. 1459–1495), Scottish theologian, diplomat, and priest
- John Ireland (writer), (died 1808), British author
- John Busteed Ireland (1823–1913), American lawyer, writer, and landowner
- Jon Ireland (born 1967), Australian tennis player