John Halliday may refer to:
John Halliday (actor) (1880–1947), American actor John Halliday (ophthalmologist) (1871–1946), Australian doctor John Halliday (footballer) (born 1880), English professional footballer John Halliday (died 1805) (c. 1737–1805), British politician who sat in the House of Commons from 1775 to 1784 John Halliday (died 1754) (c. 1709–1754), British politician who sat in the House of Commons in 1754 John Halliday (cricketer) (1915–1945), English cricketer
See also Jon Halliday (born 1939), British historian Johnny Hallyday (1943–2017), stage name of French singer and actor Jean-Philippe Smet Johnny Holiday