Doonshean Beach, Dún Síon, is a quite beach on the eastern side of Dingle Town, County Kerry.
Dooshean Beach, or, in Irish Dún Síon's Beach, has views of Kinnard Village in the neighbouring parish of Lispole. The "Siorrach", meaning foal, is a sea stack which can be seen from the beach and is said to resemble a foal.
A river flows down along the shore of the beach until it reaches the sea, which causes tidal currents. Swimming on Doonshean Beach is not recommended, but it is a popular spot for sea anglers at high tide.