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O'Hanlon is an Irish surname associated with the Ó hAnluain sept. As with other similar names, the added prefix "O'" means "son of" (Hanlon).

Notable people with that surname include:

See also[edit]


  • The O'Hanlons of Orior 1558–1691:Part II, Joseph Canning, Seanchas Ard Mhacha, pp. 111–192, 2002.