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:
Ardal O'Hanlon (born 1965), Irish comedian Cressida O'Hanlon, Australian politician Evan O'Hanlon (born 1988), Australian Paralympian Fergal O'Hanlon (1936–1957, Irish Republican Army member Fran O'Hanlon (born 1948), American basketball coach George O'Hanlon (1912–1989), American actor Hugh O'Hanlon (1938–2020), British nuclear physicist John O'Hanlon (chess player) (1876–1960), Irish chess master John O'Hanlon (Lackaghmore) (1889–1920), Sinn Féin member shot during the Irish War of Independence John O'Hanlon (politician) (1872–1956), Irish politician and journalist John O'Hanlon (writer) (1821–1905), Irish priest and writer Killian O'Hanlon (born 1993), Gaelic footballer Michael E. O'Hanlon (born 1961), American policy consultant Michael F. O'Hanlon (1890–1967), Irish politician Paddy O'Hanlon (1944–2009), Irish politician Pat O'Hanlon, (born 1991), Australian rugby player Redmond O'Hanlon, British writer Redmond O'Hanlon (outlaw), 17th-century Irish rapparee Rory O'Hanlon (1934–2026), Irish politician Rory O'Hanlon (Irish judge) (1923–2002), Irish judge Siobhán O'Hanlon, Irish politician Virginia O'Hanlon, catalyst for "Yes, Virginia, there is a Santa Claus"
See also
Hanlon
References The O'Hanlons of Orior 1558–1691:Part II, Joseph Canning, Seanchas Ard Mhacha, pp. 111–192, 2002.