Cathal mac Muiredaig Muillethan was a King of Connacht from the Uí Briúin branch of the Connachta. He was the son of Muiredach Muillethan mac Fergusso, a previous king and brother of Indrechtach mac Muiredaig Muillethan. He was of the Síl Muiredaig sept of the Uí Briúin. He ruled from 728 to 735.
- Occupation
- monarch
- Position held
- list of kings of Connacht
- Died
- 735
