O'Conor is a surname of Irish origin, derived from the Gaelic name "Ó Conchobhair," meaning "descendant of Conchobhar." It is associated with several notable historical figures and families in Ireland, particularly in the province of Connacht. The O'Conors were once kings of Connacht and played significant roles in Irish history. The name O'Conor has various spellings, including O'Connor and O'Conor Don. Today, it is a common surname in Ireland and among the Irish diaspora worldwide. Many individuals with this surname have made contributions in various fields, including politics, literature, and sports, reflecting the rich cultural heritage of the Irish people.