Dùn Morbhaidh, also known as Dun Borbaidh, is a hillfort located on the Inner Hebridean island of Coll. The early 20th century antiquary Erskine Beveridge considered it as one of the four most interesting fortifications on Coll (along with Dùn an Achaidh, Dùn Anlaimh, and Dùn Dubh).