Michael O'Brien
Michael or Mike O'Brien may refer to:
- Michael O'Brien (American poet) (born 1939), American poet
- Michael O'Brien (Australian rules footballer) (born 1980), West Coast Eagles
- Michael O'Brien (fencer) (born 1969), Irish fencer
- Mike O'Brien (game developer), co-founder, ArenaNet; game designer and programmer
- Michael O'Brien (swimmer) (born 1965), American swimmer
- Michael O'Brien (photographer) (born 1950), American photographer
- Michael O'Brien (Irish politician), former councillor and mayor of Clonmel
- Michael O'Brien (South Australian politician) (born 1949), Australian Labor Party member of the South Australian House of Assembly, 2002-present
- Mike O'Brien (UK politician) (born 1954), United Kingdom Labour Party politician
- Michael O'Brien (Victorian politician), Liberal Party of Australia member of the Victorian Legislative Assembly, 2006-present
- Michael O'Brien, first known streaker at a major sporting event
- Michael D. O'Brien (born 1948), Canadian author
- Michael H. O'Brien (born 1954), Member of the Pennsylvania House of Representatives, 2007-present
- Michael O'Brien (Irish footballer), Irish sportsman in 1920s
- Michael O'Brien (historian), American historian
- Guardsman (Michael O'Brien), a fictional character in the Iron Man comics
- Mike O'Brien (hurler) (born 1978), Irish sportsperson.
- Mike O'Brien (American politician) (born 1968), Seattle City Council member.
- Michael O'Brien (hurling manager), Irish Catholic priest and former hurling manager
See also