Saddell Abbey was a Cistercian monastery in Argyll, Scotland, founded in 1207 by Ragnall, son of Somairle mac Gille Brigte. It was established by monks from Mellifont Abbey in Ireland. Very little is known about the abbey and its history. It probably enjoyed several centuries of good monastic life, but by the reign of James IV of Scotland monastic life had apparently disappeared. It was proposed to the Pope that the bishopric of Argyll should be moved from Lismore to Saddell as the former was in ruins.