Patriarch Joachim (Russian: Иоаким; January 6, 1620 – March 17, 1690) was the eleventh Patriarch of Moscow and All Russia, an opponent of the Raskol (the Old Believer schism), and a founder of the Slavic Greek Latin Academy. Born Ivan Petrovich Savelov (Иван Петрович Савелов) also in some other sources as Ivan Petrovich Savyolov, Joachim was of noble origin. When his family died in the 1654 epidemic, he became a monk and served in various monasteries, receiving the religious name Joachim upon his tonsure.