The Shagalaly^[1] (Kazakh: Шағалалы, Şağalaly), formerly known as Chaglinka,^[2] is a river of northern Kazakhstan. It is 234 kilometres (145 mi)^[3] long, and has a drainage basin of 9,220 square kilometres (3,560 sq mi). The river flows through the territory of Akmola and North Kazakhstan regions. The name "Shagalaly" in translation from Kazakh means "area where there are many seagulls" ^[4]

The river originates from the Mount Ak-Cheku between knolls in Dzhilandy and Zerenda mountains. It flows northward along a wide valley. Close to Lake Kopa it bends eastward and flows into the western lakeshore, near the city of Kokshetau. Then it flows out of the northern end of the lake heading roughly northwards. Finally it has its mouth in the southern end of the lake Shaglyteniz.^[5][6]