The Kulyagash (name originates from the Mari language; Tatar: Көләгәш; Russian: Кулягаш) is the biggest wetland in Tatarstan, Russian Federation. It consists of Kulyagash swamp and several lakes. It is situated in Belaya and Ik Rivers interfluvial, Aktanyshsky District, at the east of Tatarstan, near the border with Bashkortostan. The area of the wetland is estimated as 22,000 ha. Kulyagash stretches from west to east 17.5 kilometers (10.9 mi), from north to south 10 kilometers (6.2 mi). The most notable lakes in the wetland are Atyr, Kinder-Kul, Azybeyevskoye, Syulyale-Kul, the biggest being, however elongate Kulyagash Lake. There are forests at the several islands in the swamp.