Chrysostom Blashkevich, OSB (January 27, 1915, Bely, Tver Oblast, Russian Empire - October 3, 1981, Niederalteich, Germany) was a Benedictine monk of Russian origin.
Blashkevich was born in a Russian Orthodox family.
During World War II was recruited into the Soviet Army, where he turned his coat and served as interpreter in the German Army.
In 1945 was converted to Catholicism and entered the Benedictine Order, being dean of the Monks of Byzantine Rite in Nideralteich Abbey in Germany.
Father Blashkevich was engaged in Catholic ecumenism with other Christian religions but he was also a critic of desacralisation of Catholic doctrine in relation to the dialogue with Protestant denominations and the real intentions of the Orthodox Christians in the ecumenism.