O'Connor Name History
O'Connor Irish Coat of Arms
O'Connor is a surname of Irish origin, originally meaning Ó Conchobhair ("grandson/descendant of Conchobar"). A more modern Irish spelling is Ó Conchúir.
There were at least five unrelated Ó Conchobhair families originally, located in Derry, Sligo/Roscommon (Connachta), Offaly/Laoise (Uí Failghe), Clare (Corco Modhruadh) and Kerry (Ciarraige).
Variant spellings of the Irish surname O'Connor include O'Conner, Connor, Conner, Connors, O'Conor, O'Connors, Conor, Concair, O'Connars, and many more.
The O'Connor family crest and coat of arms
For detailed O'Connor name history information, our Framed Irish Family Name History (#1760) has more information on the O'Connor family origins and surname.
The Irish Rose has a large selection of O'Connor coat of arms items. Items featuring the Irish counties connected to the O'Connors include Irish County mugs and Irish county coat of arms flags.
Visit O'Connor Pub in Ireland
There's at least one pub in Ireland that bears the O'Connor name. Make sure you visit O'Connor's Guesthouse & Pub in Cloghane, County Kerry on your next trip to Ireland.
If you don't have any trips planned, our personalized pub gifts are the next best thing!
Notable people named O'Connor
Medieval kings
- Cathal Crobhdearg Ua Conchobair (1153–1224), King of Connacht
- Conchobar Máenmaige Ua Conchobhair (died 1189) last independent King of Connacht
- Feidhlim Mac Aoidh Ó Conchobhair, 1293–1316, King of Connacht
- Ruaidhrí Ó Conchobhair (died 1198), last High King of Ireland (also known as Rory O'Connor)
- Toirdealbhach Mac Ruaidhrí Ó Conchobhair (1088–1156), High King of Ireland (also known as Turlough O'Connor)
Law and politics
- Arthur O'Connor (MP) (1844–1923), Member of Parliament for Queen's County
- Basil O'Connor (1892–1972), American lawyer, co-founded National Foundation for Infantile Paralysis with Franklin D. Roosevelt
- Batt O'Connor, Irish builder, who worked for the revolutionary Michael Collins
- Bob O'Connor (mayor) (1944–2006), Mayor of Pittsburgh, Pennsylvania
- Dennis O'Connor (judge), Associate Chief Justice of Ontario
- Edmund O'Connor (1848–1898), President pro tem of the NY State Senate 1895
- Feargus O'Connor (1794–1855), Irish Chartist leader
- Frank D. O'Connor (1909–1992), New York politician
- Frank O'Connor (1903–1966), Canadian politician
- Gavan O'Connor (b. 1947), Australian politician
- Gordon O'Connor (b. 1939), Canadian politician
- James O'Connor (Louisiana politician) (1870–1941), American politician
- John O'Connor (Canadian politician) (1824–1887), Canadian politician
- Joseph O'Connor, Irish author
- Joseph O'Connor (politician), Irish revolutionary, soldier and politician
- Joseph O'Conor (1916–2001), Irish actor
- Sir Kenneth O'Connor (b. 1896), British Judge
- Larry O'Connor (b. 1956), Canadian politician
- Máireag Bean Uí Conchobhair Fáilghe, (died 1451) Queen, and patron of the arts
- Maureen O'Connor (b. 1951), Lieutenant Governor of Ohio and member of the Ohio Supreme Court
- Maureen O'Connor (California politician) (b. 1946), Mayor of San Diego, California, from 1985—1992
- Matt O'Connor (activist), founder of the fathers' rights pressure group Fathers 4 Justice
- Michael A. O'Connor, Mayor of Berwyn, Illinois
- Michael O'Connor (Australian politician) (1865–1940), Australian politician
- Patrick J. O'Connor, Chicago alderman
- Richard O'Connor (politician) (1851–1912), Australian politician and jurist
- Sandra Day O'Connor (b. 1930), Associate Justice of the United States Supreme Court
- T.P. O'Connor (1848–1929), Irish journalist and politician
- Terence O'Connor (1891–1940), British politician
Religion
- Denis T. O'Connor (1841-1911) Roman Catholic Archbishop of Toronto
- James O'Connor (bishop) (1823-1891), Bishop of the Roman Catholic Diocese of Omaha
- John Joseph O'Connor (1920-1999), Roman Catholic Archbishop of New York City
- Michael O'Connor (bishop), Bishop of the Roman Catholic Diocese of Pittsburgh
- Patrick Edward O'Connor (1932-2014), New Zealand Roman Catholic priest
- William Patrick O'Connor, Bishop of the Roman Catholic Diocese of Superior (1942–1946)
Military
- Arthur O'Connor, various including:
- Arthur O'Connor (United Irishman) (1763–1852), United Irishmen and French General
- Bryan D. O'Connor (b. 1946), astronaut
- Luke O'Connor (1831–1915), first recipient of the Victoria Cross and British General
- Richard O'Connor (1889–1981), British General
- Rory O'Connor, Irish revolutionary soldier, who commanded Four Courts garrison
Science and academia
- C. Y. O'Connor (1843–1902), Irish engineer
- David O'Connor (Egyptologist), Australian egyptologist
- J. Dennis O'Connor, American academic administrator
- Johnson O'Connor (1891–1973), American psychometrician
Arts
- Brian O'Connor, American bassist
- Caroline O'Connor (b. 1962), Australian singer, dancer and actress
- Carroll O'Connor (1924–2001), American actor
- Claudio O'Connor (b. 1963), Argentinian singer
- Des O'Connor (b. 1932), British singer and TV Comedian
- Donald O'Connor (1925–2003), American actor and entertainer
- Ella Marija Lani Yelich-O'Connor, more known as Lorde (b. 1996), New Zealand singer-songwriter
- Erin O'Connor (b. 1978), British supermodel
- Flannery O'Connor (1925–1964), American author
- Frank O'Connor (1903–1966), Irish author
- Frank O'Connor (1881–1959), American actor, director, and screenwriter
- Frank O'Connor (Charles Francis O'Connor) (1897–1979), American actor and husband of Ayn Rand
- Gavin O'Connor (b. 1964), American film director, screenwriter, producer, playwright and actor
- Gavin O'Connor (b. 1972), Irish actor
- Hazel O'Connor (b. 1955), English singer and actress
- James O'Connor (drummer), American drummer
- Jim O'Connor, American actor
- Joe O'Connor (actor), American actor
- Joseph O'Connor (b. 1963), Irish novelist
- Mark O'Connor (b. 1961), American fiddler
- Raymond O'Connor (b. 1952), American character actor
- Renée O'Connor (b. 1971), American actress
- Sinéad O'Connor (b. 1966), Irish singer-songwriter
- Una O'Connor (actress) (1880–1959), Irish character actress
- O'Connor (band), Argentinian band
Sport
- Adrian O'Connor (b. 1978), Irish backstroke swimmer
- Cian O'Connor (b. 1979), Irish equestrian
- Bernard O'Connor (b. 1979), Gaelic footballer
- Brian O'Connor (baseball coach), University of Virginia baseball head coach
- Christy O'Connor Jnr (1948–2016), Irish golfer
- Christy O'Connor Snr (b. 1924), Irish golfer; uncle of Christy Jnr
- Dan O'Connor (baseball) (1868–1942), Canadian baseball player
- David O'Connor (equestrian) (b. 1962), American equestrian
- Donncha O'Connor (b. 1981), Cork All Ireland Senior Medalist
- Gary O'Connor (b. 1974), Scottish football goalkeeper
- Garry O'Connor (b. 1983), Scottish footballer (Hibernian, Lokomotiv Moscow, Birmingham City, Scotland)
- James O'Connor (footballer born 1979) (b. 1979), Irish footballer
- James O'Connor (footballer born 1984) (b. 1984), British footballer
- James O'Connor (rugby) (b. 1990), Australian rugby union player
- Jamesie O'Connor (b. 1971), Irish hurler
- Jennifer O'Connor (netball) (b. 1984), Australian netball player
- Karen O'Connor (b. 1958), American equestrian
- Mary O'Connor (athlete) (b. 1955), New Zealand long-distance runner
- Michael O'Connor (rugby) (b. 1960), Australia rugby union and rugby league player
- Michael O'Connor (footballer born 1987), Northern Ireland football (soccer) player
- Michael O'Connor (baseball player) (b. 1980), Major League Baseball player
- Patrick O'Connor (athlete), Jamaican sprinter
- Pat O'Connor (auto racer) (1928–1958), Formula One driver
- Paul O'Connor (Gaelic footballer), Irish Gaelic footballer
- Paul O'Connor (skier), Irish skier
- Peter O'Connor (athlete) (1872–1957), Irish athlete
- Red O'Connor, American football player
- Tommy O'Connor, Irish footballer
- Tony O'Connor (rower), Irish rower
- William Joseph O'Connor (1862–1892), Canadian professional oarsman
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