Lake Işıklı (Turkish: Işıklı Gölü) is a freshwater lake in Turkey's inner Aegean Region extending on Çivril Plain between the provinces of Denizli and Afyonkarahisar. The lake is bordered by the boundaries of several districts, namely, clockwise Çivril (Denizli Province), the principal urban center of the region, and Kızılören, Dinar and Evciler (Afyonkarahisar Province). A township on the lake shore and that is part of Çivril district carries the same name as the lake (Işıklı).
The lake lies at an altitude of 821 m and its area is 73 square kilometres. Its waters fed by streams are used for irrigation for the surrounding agricultural lands and the lake is also an important fishing and aquaculture center at regional scale.
