Flaithbertach mac Loingsig was a High King of Ireland. He was a member of the Cenél Conaill, a branch of the northern Uí Néill. He was the son of Loingsech mac Óengusso, a previous high king. He ruled from 728 to 734.
- Occupation
- monarch
- Position held
- High King of Ireland
- Born
- 750
- Died
- 765
