Forbassach Ua Congaile (died 714) was a king of the Uí Failge, a Laigin people of County Offaly.
He was related to his predecessor Fland Dá Chongal but the exact relationship is unclear.
[1] The Uí Failge had a traditional hostility to the rulers of Uisnech.
[2] The descendants of Fland Dá Chongal, known as the Uí Flaind, dominated the kingship after his death.
[citation needed] This biography of a member of an Irish royal house is a stub.