Hilarion Alfeyev (born Grigoriy Valerievich Alfeyev; 24 July 1966) is a bishop of the Russian Orthodox Church. At present he is he Metropolitan of Volokolamsk, the chairman of the Department of External Church Relations and a permanent member of the Holy Synod of the Patriarchate of Moscow. He is also a noted theologian, church historian and composer and has published books on dogmatic theology, patristics and church history as well as numerous compositions for choir and orchestra.