Flaithbertaigh Ua Flaithbertaigh (died 1098) was King of Iar Connacht.
Flaithbertaigh was third or fourth chief of the Muintir Murchada since their expulsion from Uí Briúin Seóla by the Ua Conchobair kings of Connacht. The first to bear the surname was Murchadh an Chapail Ua Flaithbheartaigh, King of Uí Briúin Seóla (died 1036).
He was foster-father to the then King of Connacht, Ruaidrí na Saide Buide, who was in turn godfather to Flaithbertaigh's children. In 1092 he subdued Ruaidri in his own house and had him blinded, making himself king in Ruaidri's place. However in 1098, possibly after been dethroned, he was killed by the family of Ruaidri.
Preceded by Ruaidrí na Saide Buide |
Kings of Connacht 1092–1095 |
Succeeded by Tadg mac Ruaidrí Ua Conchobair |
Preceded by Mac meic Aedh Ua Flaithbheartaigh |
Kings of Iar Connacht 1091–1098 |
Succeeded by Brian Ua Flaithbertaigh? |