Alexei Osipov (born March 31, 1938, Belyov, Tula oblast, RSFSR, USSR) is a well known Russian Orthodox theologian, professor and lecturer from Moscow Orthodox Theological Academy. He is also a widely popular Orthodox pedagogue, publicist and defender of Russian Orthodoxy, being a slavophil, apologist of Eastern Christianity as based on teachings of Church Fathers and exposer of deficiencies of western Catholic teachings.

After finishing school he refused to enter any university and in home conditions he undertook the study of theology under the guidance of hegumen Nikon (Vorobyov) for 3 years. In 1958 he entered the 4th (final) grade of Moscow Theological Seminary, having passed exams for the previous three years. Next year he entered Moscow Theological Academy which he finished in 1963.

Since 1965 he has been a lecturer of basic theology, since 1975 - professor.

in English:

• Downloadable English translation (in Word Doc.) of Osipov´s "Soul´s life after death" (Posmertnaya Zhizn Dushi). Moscow: Danilovskiy Blagovestnik, 2005; 4th edition: Moscow, 2007.
• The search for truth on the path of reason. Moscow: Sretensky Monastery and Pokrov Press, 2009. ISBN 978-0-9842848-0-1

in Russian:

• Translation of the order of Morning and Evening Church services by the Greek service instruction book of 1951 in comparison with Russian synodal edition (manuscript, Library of Moscow Theological Academy).
• The basics of theology (Osnovnoye bogosloviye). Course of lectures for students of Moscow Theological Academy. Moscow, 1994.
• The search for truth on the path of reason. Moscow: Danilovskiy Blagovestnik, 1997.
• Orthodox understanding of the meaning of life. Kyiv, 2001.
• Soul's life after death (Posmertnaya Zhizn Dushi). Moscow: Danilovskiy Blagovestnik, 2005; 4th edition: Moscow, 2007.

• Lectures, answers and interviews on Orthodox Life and Faith by prof. A. Osipov from Moscow Theological Academy in English's channel on YouTube
• Videos, Audios, Books and Publications in English
• Official website
• Biography