The Cenél nÓengusa were a kin group who ruled the island of Islay, and perhaps nearby Colonsay, off the western coast of Scotland in the early Middle Ages. The Senchus fer n-Alban, a census and genealogy of the kingdom of Dál Riata, lists the Cenél nÓengusa as one of the three kin groups making up the kingdom in Argyll. The others were the Cenél nGabráin of Kintyre and the Cenél Loairn of Lorn. A fourth group, the Cenél Comgaill, of Cowal and the Isle of Bute, later split from the Cenél nGabráin. The Senchus portrays Dál Riata as it existed in the mid-seventh century.