John Udall may refer to:
John Udall (Puritan) (1560?–1592), English clergyman John Hunt Udall (1889–1959), mayor of Phoenix, Arizona, 1936–1938 John Nicholas Udall (1913–2005), mayor of Phoenix, Arizona, 1948–1952, and son of John Hunt Udall
See also John Oliver Udal (1926–2022), district commissioner in Anglo-Egyptian Sudan John Udal (judge) (1848–1925), English-born cricketer, antiquarian, author, lawyer and judge John Udell (1795–1874), American farmer and Baptist lay preacher