库斯塔奈 （Қостанай‎）是哈萨克斯坦斯坦库斯塔奈州首府，临托博尔河。人口223,600人。

建于1879年，后成为草原的贸易中心，1933年成为州府。

Kostanay (Kazakh:Қостанай / Qostanay) is a city located on the Tobol River in northern Kazakhstan. It was known as Nikolayevsk (Russian:Николаевск) until 1895 and then as Kustanay (Russian:Кустанай) until 1997. Kostanay is the administrative center of the Kostanay Region. Population: 214,916 (2009 Census results);222,816 (1999 Census results).