Alexander Og MacDonald (died 3 October 1613) was a son of Angus MacDonald, 8th of Dunnyveg and Mary, daughter of Hector Og Maclean of Duart.
He had a daughter Margaret to an unknown woman.
Alexander drowned on 3 October 1613 in Caol Ile (Sound of Islay).
Margaret married Hector MacAlister of Ardincross in 1626.
This biography of a Scottish peer or noble is a stub.