thumb|187x187px|E.M. Korneev "Black Sea Cossack", 1812.
The Black Sea Cossack Host (), also known as Chernomoriya (), was a Cossack host of the Russian Empire created in 1787 in southern Ukraine from former Zaporozhian Cossacks. In the 1790s, the host was re-settled to the Kuban River. It comprised the Caucasus Fortified Defence Line from the mouth of the Kuban River to the mouth of the Bolshaya Laba River.
History
The Black Sea host played a crucial role in the Russo-Turkish War of 1787–1797. As a result, Catherine II rewarded them with the Kuban land in the North Caucasus (north of the Kuban River, south of the Yeya River and east of the Sea of Azov) by her decree of June 30, 1792.