Dùn Uragaig is a clifftop promontory fort located on the Inner Hebridean island of Colonsay, Scotland. The site is located at grid reference NR38169826.

The fort overlooks the inlet of Port nam Fliuchan.

56°06′19″N 6°12′46″W / 56.10528°N 6.21264°W / 56.10528; -6.21264