O'Brien (surname)

O'Brien is a surname of Irish origin which has many variants in the Irish diaspora worldwide, such as O'Bryan, O'Brian, O'Briant, O'Brient, O'Bryant, O'Brine, O'Bryen etc., which all claim a general common ancestry with the original Gaelic surname being Ó Briain or Uí Briain. Notable people with the surname include:

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