Dúngal Eilni mac Scandail (died 681) was a Dál nAraidi king of the Cruthin. He ascended to this position some time after 668. He was the son of Scandal mac Bécce (died 646), a previous king. In the 6th and 7th centuries the Dál nAraidi were part of a confederation of Cruthin tribes in Ulaid, an over-kingdom in Ireland, and were the dominant dynasty. Dungal belonged to a branch of this family settled in Eilne, a plain between the Bann and Bush rivers in modern-day County Antrim, Northern Ireland. He is styled "King of the Cruithne" in the annals.