O'Flaherty is a surname of Irish origin derived from Ó Flaithbheartaigh. It may refer to:
Anthony O'Flaherty (1800–1866), Irish politician Bill O'Flaherty, Canadian ice hockey player, coach and executive, son of "Peanuts" O'Flaherty Bridie O'Flaherty (1917–2006), Irish politician, mayor of Galway Colm O'Flaherty (born 1950), Irish retired Gaelic footballer Colman O'Flaherty (1878–1918), Irish-born American military chaplain posthumously awarded the Distinguished Service Cross Edmond O'Flaherty (died 1749), Irish Jacobite Edmund O'Flaherty (1821–1886), Irish Member of Parliament and businessman in the United States Eliza O'Flaherty (1818–1882), Australian writer and stage actress Eric O'Flaherty (born 1985), American former Major League Baseball pitcher Eugene O'Flaherty (born 1968), American lawyer and politician Eva O'Flaherty (1874–1963), Irish nationalist, model, patron of the arts and London milliner Gerry O'Flaherty (born 1950), Canadian-American former National Hockey League player Hugh O'Flaherty (1898–1963), Irish Catholic priest who saved thousands of Allied soldiers and Jews from the Nazis in World War II Hugh O'Flaherty (judge) (born 1937), Irish former judge of the Supreme Court of Ireland and barrister Joe Flaherty (1941–2024) né O'Flaherty, American actor, writer and comedian John O'Flaherty (politician) (1821–1886), Irish-born American politician Kate Chopin (1850–1904), née O'Flaherty, American author of short stories and novels Kathleen O'Flaherty (1916–1994), Irish scholar, academic and writer on French literature Liam O'Flaherty (1896–1984), Irish novelist and short story writer Liam O'Flaherty (footballer), Irish footballer in the 1980s and '90s May O'Flaherty (1904–1991), Irish bookshop operator and literary patron Michael O'Flaherty, Commissioner for Human Rights of the Council of Europe Michael O'Flaherty (politician) (1891–1952), mayor of Galway, Ireland Paddy O'Flaherty (1942/3–2016), broadcaster and journalist from Northern Ireland Paddy O'Flaherty (Gaelic footballer) (born 1933), Irish retired Gaelic footballer Patrick O'Flaherty (politician) (1928–1989), mayor of Galway Patrick O'Flaherty (writer) (1939–2017), Canadian writer, historian and academic Peanuts O'Flaherty (1918–2008), Canadian National Hockey League player Roderick O'Flaherty (1629–1718 or 1716), Irish historian Samuel O'Flaherty (1895–1930), Irish politician Sid O'Flaherty (1886–1967), Australian politician Terry O'Flaherty, Mayor of Galway (2003–2004) Tom Maidhc O'Flaherty (1890–1936), Irish communist politician Tom O'Flaherty (rugby union) (born 1994), English rugby union footballer
See also Flaherty, a surname