O'Brien meaning, boyO'Brien

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What does O'Brien mean?

O'Brien \o-brien, ob-rien\ as a name for boys is of Celtic, Irish and Gaelic origin, and the meaning of O'Brien is "high, noble". O'Brien is a derivative of Brian (Celtic, Irish, Gaelic): could also mean "strength". Not widely used as a name for babies.


O'Brien has 12 related forms via Brian: Brain, Bri, Briano, Briant, Brien, Brion, Bryan, Bryant, Brye, Bryen, Bryent and Bryon.


O'Brien is a rare first name for men. O'Brien is an equivalently unique surname too for both adults and children. (2000 U.S. Census)

Below is a graphed comparison of the usage of O'Brien and corresponding names. Brain, Brian (#168 last year), Brien, Bryan (#148), Bryant (#581) and Bryon are the prominent related forms of O'Brien (#unlisted) ranked in the Top 1000. These boy names were at the top of their popularity during the years 1970-1979 and have become significantly less popular since, with the forms Brain, Bryant and Bryon becoming less trendy. Brian (#168) and Bryan (#148) are two of the more chic boy names here. (2014 Birth Statistics)

Top 1000 baby names ranking of Brain, Brian, Brien, Bryan, Bryant, Bryon in U.S.

Top 100 baby names ranking of Brian outside U.S.