Irish Surnames
Explore 546 Irish surnames with meanings and origins.
O'Hagan
Descendant of Ágáin (young)
Northern Ireland
O'Hanlon
Descendant of Anluain (great hero)
Northern Ireland
O'Kane
Descendant of Catháin (warrior)
Northern Ireland
O'Leary
Calf herder
Munster24K+
O'Loane
Descendant of Luain (warrior)
Northern Ireland
O'Malley
Noble chief
Connacht8K+
O'Neill
Champion
Ulster140K+
O'Rourke
Restless one
Connacht21K+
O'Shea
Hawk-like
Munster32K+
O'Sullivan
Dark-eyed
Munster200K+
Ormsby
Of Norse origin (Orm's farm)
Connacht3K+
Phelan
Wolf
Leinster13K+
Power
Poor man, from le Poer
Munster70K+
Quill
Descendant of Coill (woodland)
Munster2K+
Quinn
Wise
Ulster90K+
Rabbitt
Of Norman origin (rabbit catcher)
Connacht2K+
Rafferty
Flood tide prosperity
Ulster3K+
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