Máel Umai mac Báetáin (died c. 608) was an Irish prince, the son of Báetán mac Muirchertaig of the northern Uí Néill, who appears to have been a significant figure in early Irish tales.
His father and his brother Colmán Rímid are both uncertainly reckoned High Kings of Ireland.
[2] According to the annals, Máel Umai killed Æthelfrith's brother, who is incorrectly called Eanfrith.
[3] Bede confirms the death of Æthelfrith's brother at Degsastan, giving his name as Theodbald, and adding that he was killed along with all of his retinue.
[6] Surviving genealogies refer to Máel Umai as "the fierce" and as a "war leader", leading Mac Cana to propose that he was remembered as a heroic warrior, similar to the legendary figures of the Ulster Cycle.