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