Fedlim Geancach Ó Conchobair (Feidhlimidh Gheangcaigh mac Toirdhealbhaigh Óig Ó Conchobhair Donn) (died 1475) was an Irish monarch of the fifteenth century. He was one of the sons of Toirdhealbhach Óg Donn Ó Conchobair and King of Connacht from 1461–1475. Fedlim Geancach Ó Conchobair succeeded to the throne of Connacht in 1461 after the death of Aedh mac Tairdelbach Óg Ó Conchobair. He was the last fully recognized monarch of The Kingdom of Connacht.

References

Annals of Ulster at at University College Cork Annals of the Four Masters at at University College Cork Chronicum Scotorum at at University College Cork Byrne, Francis John (2001), Irish Kings and High-Kings, Dublin: Four Courts Press, Gaelic and Gaelised Ireland, Kenneth Nicols, 1972.