The '''Diocese of Kazan''' is a [[diocese]] under the [[jurisdiction]] of the [[Church of Russia]] with the [[see]] of the ruling [[bishop]] located in the city of Kazan. The borders of the diocese are common with those of the Republic of Tatarstan. The city of Kazan is located in the center of European Russia along the Volga River. Since its establishment, the borders of the diocese have varied greatly as Christianity was established in the formerly pagan countryside. Archbishop Anastassy (Metkin) of Kazan and Tatarstan is the ruling hierarch of the Diocese of Kazan.