G. O. Mebes (1868–1930/1934) was one of the most prominent Russian esotericists of the early 20th century. A mathematics professor, he gained renown for his public lectures titled A Concise Course in the Encyclopedia of Occultism. Mebes held key roles in Russian Freemasonry, Rosicrucian, and Martinist orders. In 1912, he severed ties with the French Martinist order to establish an Autonomous Martinist Order of Russian Obedience. Although Mebes was persecuted by the Soviet state and died in exile, his teachings endured and influenced several generations of occultists both in Russia and abroad.
