O'Kane is an Irish surname, anglicised from the Irish Ó Catháin, and was the name of a significant clann in Ulster, a province of Ireland. The surname has also been anglicised as O'Cahan, Kane, O'Keane, O'Kean, O'Keen, O'Keene, Keen, Keene, Kain, O'Kaine, and similar variations thereof. They are descended from Eógan, son of Niall of the Nine Hostages. In the late Middle Ages, they were the primary sept under the Ó Néill clann of Ulster, holding the privilege of inaugurating the Chief of the Ó Néill.
People Aidan O'Kane Damien O'Kane Dene O'Kane Deirdre O'Kane Eunan O'Kane Gary O'Kane Gerard O'Kane Jake O'Kane John O'Kane Liam O'Kane Maggie O'Kane Marty O'Kane Mick O'Kane Paddy O'Kane Richard O'Kane Sean O'Kane
See also O'Cahan USS O'Kane (DDG-77) O'Kane Market and O'Kane Building, Monroe County, New York The O'Kanes