List of Famous people with last name O-brien

Conor Cruise O'Brien often nicknamed "The Cruiser", was an Irish politician, writer, historian and academic who served as Minister for Posts and Telegraphs from 1973 to 1977, a Senator for University of Dublin from 1977 to 1979, a Teachta Dála (TD) for the Dublin North-East constituency from 1969 to 1977 and a Member of the European Parliament (MEP) from January 1973 to March 1973.

Peter O'Brien is an Australian actor, best known for his role as an original cast member in 1985 of Australian soap opera Neighbours as Shane Ramsay.

Mariah Waterfall O'Brien is an American interior designer and former actress and model. She made her film debut in the drama Gas, Food, Lodging (1992) and later appeared in the horror film Halloween: The Curse of Michael Myers (1995). O'Brien also appeared on the cover of Alice in Chains' 1992 album Dirt.

Nora Connolly O'Brien was an Irish politician, activist and writer. She was a member of the Irish Senate.