Alexander Comyn, Sheriff of Aberdeen

Alexander Comyn (c. 1258–1308) was a younger son of Alexander Comyn, second Earl of Buchan. While the earldom passed to his elder brother John, he served as sheriff of Aberdeen from 1297 to 1304, during the First War of Scottish Independence.

He left two daughters, Alice and Margaret. He died in 1308, shortly before his childless brother John, and the title to the earldom of Buchan passed to his daughters.