Dúnchad mac Cinn Fáelad was an eighth-century abbot of Iona who belonged to the ruling line of the Cenél Conaill. As the grandson of High King Máel Coba, he held a prominent position within his kindred. His leadership at Iona, which began around 707, occurred during a period of internal political tension regarding religious customs. Following his death in 717, the community faced significant changes, including the expulsion of the clergy from Pictland by King Nechtan mac Derile.