Alexander Stewart (died 1371) was a 14th-century Scottish bishop. Probably from Menteith, he appears in the sources from the first half of the 1340s, possessing a university degree and holding the position of Archdeacon of Ross. He was active at the papal curia in the second half of the decade as a papal chaplain and administrator, before being provided as Bishop of Ross in 1350, a position he held until his death in 1371.