Patriarch Alexy I (Alexius I, Russian: ???????? ??????? I, secular name Sergey Vladimirovich Simanskiy, Russian: ?????´? ???????????? ?????????; November 8 [O.S.
October 27] 1877 – April 17, 1970) was the 13th Patriarch of Moscow and all Rus', Primate of the Russian Orthodox Church (ROC) between 1945 and 1970.