Sir Alan Stewart of Dreghorn (k.1333) was a Scottish nobleman.
The son of John Stewart of Bonkyll and his wife Margaret de Bonkyll, Sir Alan fought for Robert the Bruce during the First War of Scottish Independence.
Sir Alan accompanied Edward Bruce to Ireland in 1315, following the latter's attempt at the throne of Ireland. He was captured by the English in 1316 but was quickly ransomed. For his services to the King, Sir Alan was granted the lands of Dreghorn in Ayrshire.
Sir Alan Stewart was killed with his brothers, Sir James and Sir John Stewart, at the Battle of Halidon Hill in 1333.
By an unknown mother(s), Sir Alan Stewart had issue:
Balfour Paul, Sir James, Scots Peerage, IX vols. Edinburgh 1904.