The Abbot of Sweetheart (later Commendator of Sweetheart; also Abbot of New Abbey) was the head of the Cistercian monastic community of Sweetheart Abbey, in the ancient province of Galloway in the present area of  Dumfries and Galloway, founded by monks from Dundrennan Abbey with the patronage of Derbhfhorghaill inghean Ailein (a.k.a.
The Abbot of Sweetheart (later Commendator of Sweetheart; also Abbot of New Abbey) led the Cistercian monastic group at Sweetheart Abbey, which was situated in Galloway. This abbey was established by monks from Dundrennan Abbey and supported by Derbhfhorghaill inghean Ailein.