Lake Qalghanlu (Persian: Daryāĉe Qalghanlu, قالغانلو دریاچه, Daryāche-ye Khan Kandi;[1] Qalghanlu gölü) is the smallest natural lake in Iranian Azerbaijan. The lake is between the Khan Kandi village of Germi and the Azerbaijani border, and west of the southern portion of the Caspian Sea.