George O'Brien

• G. Dennis O'Brien
• George D. O'Brien
• George H. O'Brien Jr.
• George M. O'Brien
• George O'Brien (1900s footballer)
• George O'Brien (Irish politician)
• George O'Brien (actor)
• George O'Brien (baseball)
• George O'Brien (cricketer)
• George O'Brien (footballer, born 1935)
• George O'Brien (painter)
• George O'Brien (writer)
• George Thomas Michael O'Brien
• M.T.A. (song)