O'Brien explained
O'Brien may refer to:
People
- O'Brien (surname), an Irish surname
- O'Brien dynasty, 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
Other uses
See also
- Brien
- O'Brian, a surname (including a list of people with the name)
- O'Bryan (born 1961), American singer-songwriter
- Justice O'Brien (disambiguation)