The Province (Oblast) of the Don Cossack Host (Russian: Область Войска Донского, Oblast’ Voyska Donskogo) of Imperial Russia was the official name of the territory of Don Cossacks, roughly coinciding with today's Rostov Oblast of Russia. Its center was Cherkassk, later Novocherkassk.The province comprised the areas where the Don Cossack Host settled in Imperial Russia.