Eochocán mac Áedo
Eochocán mac Áedo was a Dál Fiatach king of Ulaid, which is now Ulster, Ireland. He was the grandson of Eochaid mac Fiachnai, a previous king of Ulaid. He ruled from 882-883.
His father Áed mac Eochada had died in 839. In 882 he succeeded his brother Ainbíth mac Áedo as leth-rí of Ulaid jointly with his other brother, Airemón mac Áedo. However, the next year in 883, Eochocán was killed by his nephews, the sons of Ainbíth.
He had married Inderb ingen Máel Dúin of the Cenél nEógain, daughter of Máel Dúin mac Áeda, King of Ailech. His sons Muiredach mac Eochocáin and Áed mac Eochocáin were also kings of Ulaid.