The Bagyrlai (Kazakh: Бағырлай; Russian: Багырлай) is a river in Akzhaik District, West Kazakhstan Region, and Inder District, Atyrau Region, Kazakhstan.

It is used for agricultural purposes and the riverbanks are a grazing ground for local cattle.

[1] The Bagyrlai begins branching off the right side of the Ural river northwest of the village of Atameken (until 1994 Antonovo), close to Bazartobe.

Its mouth is to the north of lake Terenkyzyl, where it disperses in the sand about 20 km (12 mi) WSW of Orlik, a town on the banks of the Ural river.

The Bagyrlai Dam, having a surface of 5.5 km2 (2.1 sq mi), was built on the middle course of the river in 1962, at the time of the Kazakh SSR.