Andrew de Buchan (d. 1304?) was a Scottish Cistercian, bishop of Caithness from 1296.
He was Abbot of Coupar Angus by 1284. He paid homage to Edward I of England at Perth 24 July 1291, and at Berwick-on-Tweed 28 August 1296. He was nominated to the bishopric of Caithness by Pope Boniface VIII, 17 December 1296.[1]
Andrew de Buchan died in or before 1304.[2]