The White Mosque (Albanian: Xhamia e Bardhë or Ak Mesxhid), also known as Sultan Bayezid II. Mosque, is a ruined mosque in Berat Castle, Berat, Albania. From the small, roughly square mosque there are still about a meter high foundation walls and the base of the minaret, a little over two meters high. It was built with white limestone in 1417, and was destroyed sometime in the 19th century after a local uprising against the Ottoman Empire's Tanzimat reforms.

It became a Cultural Monument of Albania in 1961, but was left untended after 1967 under Enver Hoxha's atheistic regime.