Lamprechtsofen (also called Lamprechtshöhle or, together with a connected cave, Lamprechtsofen-Vogelschacht) is a limestone karst river cave in Austria. With a depth of , it is one of the deepest caves in the world. Before the discovery of the Krubera Cave in Georgia, it was the deepest-known cave in the world. Lamprechtsofen is located northwest of Weißbach bei Lofer (Salzburg), Austria, in the Leogang Mountains.