Saryaydyn () is a salt lake in Zhanakala District, West Kazakhstan Region, Kazakhstan.
The lake lies at the end of the course of the Maly Uzen, close to Zhanakazan (former Novaya Kazanka), and southwest of Zhanakala, the capital of the district.
Geography
Saryaydyn belongs to the large Kamys-Samar lake group. It is located in the southern part and has a length of and a width of . The lake basin is fed by snow, as well as groundwater. In the summer the lake may dry up.
River Maly Uzen flows into Saryaydyn from the north but its water is heavily depleted by agricultural use. To the northwest lies lake Aydyn, to the north of Zhanakazan.