Balsdean

50°49′12″N 0°02′46″W / 50.820°N 0.046°W / 50.820; -0.046

Balsdean is a deserted hamlet in a remote downland valley east of Brighton, East Sussex, England, on record since about 1100. It was formerly a chapelry of the parish of Rottingdean, and its territory touched that of the mother parish only at a single point. Despite its remoteness, it falls within the boundaries of the city of Brighton and Hove.

The valley of Balsdean is the most reliable migration stopover in Sussex of the rare Arctic and high mountain breeding wader the dotterel. The flinty fields are thought to resemble its mountain breeding grounds.