The Kyrshabakty (Kazakh: Қыршабақты) is a river in southern Kazakhstan.

[2][3] The river flows across Sarysu District of the Zhambyl Region.

[2][1][3] There are Cambrian limestones by the river that contain a rich variety of trilobites fossils.

[4] The Kyrshabakty river has its source in springs located in the northern slopes of the Karatau Range, near Baizhansai village.

Its upper stretch is also known as Bogen (Kazakh: Бөген) and heads roughly northwestwards.