Michael O'Brien

• Beyond Tomorrow (film)
• Guardsman (Michael O'Brien)
• Michael H. O'Brien
• Michael J. O'Brien
• Michael John O'Brien
• Michael K. O'Brien
• Michael O'Brien (American poet)
• Michael O'Brien (Australian rules footballer)
• Michael O'Brien (Canadian author)
• Michael O'Brien (Fianna Fáil politician)
• Michael O'Brien (Irish sportsman)
• Michael O'Brien (Ohio politician)
• Michael O'Brien (South Australian politician)
• Michael O'Brien (Victorian politician)
• Michael O'Brien (fencer)
• Michael O'Brien (game designer)
• Michael O'Brien (historian)
• Michael O'Brien (hurling manager)
• Michael O'Brien (musician)
• Michael O'Brien (photographer)
• Michael O'Brien (swimmer)
• Micheál O'Brien
• Mick O'Brien (disambiguation)
• Mike O'Brien (British politician)
• Mike O'Brien (Canadian politician)
• Mike O'Brien (Seattle politician)
• Mike O'Brien (actor)
• Mike O'Brien (game developer)
• Mike O'Brien (hurler)