O'Brien may refer to:
People
*
O'Brien (surname)
O'Brien is a surname of Ireland, Irish origin. It has many variants in the Irish diaspora worldwide, such as Brien, O'Bryan, O'Brian, Brian, O'Brine and O'Bryen which all ''claim'' a O'Brien dynasty, general common ancestry. The original Goidelic ...
, an Irish surname
*
O'Brien dynasty
The O'Brien dynasty (; ; genitive ''Uí Bhriain'' ) was an Irish Clan and noble house of Munster, founded in the 10th century by Brian Boru of the Dál gCais (Dalcassians). After becoming King of Munster, through conquest he established hims ...
, a powerful Irish dynasty that ruled Munster and produced several High Kings of Ireland
Places
United States
*
O'Brien, California, an unincorporated community in Shasta County
*
O'Brien, Florida, an unincorporated community in Suwannee County
*
O'Brien, Oregon, a census-designated place and unincorporated community in Josephine County
*
O'Brien, Texas, a city in Haskell County
*
O'Brien, West Virginia, an unincorporated community in Barbour County
*
O'Brien County, Iowa, a county
Other places
*
O'Brien, Argentina, a town in Buenos Aires Province, Argentina
*
O'Briens Hill, Queensland, a locality in the Cassowary Coast Region, Australia
*
O'Brien Island, in the South Shetland Islands, Antarctica
*
O'Brien Island, Chile, in the Magallanes Region, Chile
Ships
*
USS ''O'Brien'', a list of ships with this name
*
''Capitan O'Brien''-class submarine three submarines built for the Chilean Navy in 1928–1929
*
''Oberon''-class submarine (also known as O'Brien-class submarine), Chilean Navy submarine class
**
Chilean submarine ''O'Brien'' (S22), an ''Oberon''-class sub
Other uses
*
O'Brien (''Nineteen Eighty-Four''), the main antagonist in George Orwell's novel
*
''O'Brien'' (TV series), a British talk show presented by James O'Brien
* ''
United States v. O'Brien
''United States v. O'Brien'', 391 U.S. 367 (1968), was a List of landmark court decisions in the United States, landmark decision of the United States Supreme Court, ruling that a criminal prohibition against Draft-card burning, burning a draft c ...
'', legal case ruled on by the US Supreme Court regarding draft card burning and the First Amendment's guarantee of free speech
*
O'Briens Irish Sandwich Bars, a café chain based in Ireland
* O'Brien AutoGlass, the Australian subsidiary of
Belron.
See also
*
Brien
*
O'Brian, a surname (including a list of people with the name)
*
O'Bryan
O'Bryan McCoy Burnette II, known by his stage name O’Bryan (born December 5, 1961), is an American musician, singer, songwriter, record producer, and multi-instrumentalist.
Early life
O'Bryan McCoy Burnette II began playing the piano at 6 ye ...
(born 1961), American singer-songwriter
*
Justice O'Brien (disambiguation)
*
{{DEFAULTSORT:Obrien