Domhnall mac Art Caomhánach

Domhnall mac Art mac Murchada Caomhánach was a king of Leinster from the Kavanagh dynasty, the Gaelic lineage that held out in the Wicklow highlands after the Norman invasion of Ireland. He succeeded his father Art mac Murchada, who had ruled from 1314, and reigned from 1323 to 1338.

He allied with Murchad O'Byrne against English settlers and may have been elected king at an assembly in 1328. Captured soon afterwards, he escaped from Dublin in January 1331, and in 1335 he campaigned in Scotland for Edward III. In 1338 he was succeeded by his son Domhnall mac Domhnall, who ruled Leinster until 1347.