Ilek is the name of several geographical locations and settlements within Russia. It refers to a river that serves as a tributary of the Ural River, flowing through the territories of both Russia and Kazakhstan.
The name also identifies three distinct rural localities (selos) in different regions of Russia. These include Ilek in the Ashinsky District of Chelyabinsk Oblast, located within the Ileksky Selsoviet; Ilek in the Belovsky District of Kursk Oblast, situated in the Ilkovsky Selsoviet; and Ilek in the Ileksky District of Orenburg Oblast, which is part of the Ileksky Selsoviet.