O'Brien (disambiguation)

O'Brien is a surname of Irish origin. It may also refer to:

In people:

• O'Brien clan, a royal dynasty who ruled from Thomond
• List of people named O'Brien
• It has many variants in the Irish diaspora worldwide, such as O'Bryan, O'Brian, O'Briant, O'Brient, O'Bryant, etc., which all claim a general common ancestry with the original Gaelic Uí Briain or Ua Briain

In places:

• O'Brien, Oregon, United States
• O'Brien County, Iowa, United States

In ships:

• USS O'Brien (disambiguation)
• O'Brien, Chilean submarine that was converted into a floating museum on the Calle-Calle River, Vadivia, Chile

In others:

• Potatoes O'Brien, a potato dish made from potatoes, onions and bell peppers
• United States v. O'Brien is a case ruled by the Supreme Court of the United States regarding burning a draft card and the First Amendment's guarantee of free speech
• O'Brien (Nineteen Eighty-Four), a fictional character in George Orwell's Nineteen Eighty-Four.

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