The Pragser Wildsee, or Lake Prags, Lake Braies (Italian: Lago di Braies; German: Pragser Wildsee) is a lake in the Prags Dolomites in South Tyrol, Italy. It belongs to the municipality of Prags which is located in the Prags valley.

During World War II it was the scene of the transport of concentration camp inmates to Tyrol.