​YEISK, a town of Russia, in the province of Kuban (Caucasus), founded in 1848 on a sandbank which separates the shallow Bay of Yeisk from the Sea of Azov, 76 m. S.W. of Rostov-on-the-Don. Pop; 35,446. Notwithstanding its shallow road stead, Yeisk has grown with great rapidity, and exports corn, linseed and wool. There are wool-cleansing factories, oil-works and tanneries.