Saint Iustin Popović (Serbian Cyrillic: Jустин Поповић; 6 April 1894, Vranje - 7 April 1979, Ćelije Monastery, Lelić) was an Eastern Orthodox theologian, archimandrite of the Ćelije Monastery, Dostoyevsky scholar, a champion of anti-communism, a writer, and a critic of the pragmatic church (ecclesiastical) life.