Ordo Templi Orientis

Ordo Templi Orientis (O.T.O.) (Order of the Temple of the East, or the Order of Oriental Templars) is an international fraternal and religious organization founded at the beginning of the 20th century. Originally it was intended to be modelled after and associated with Freemasonry, but under the leadership of Aleister Crowley was reorganized based on the Law of Thelema as its central religious principle along with The Book of the Law. Similar to many secret societies, O.T.O. membership is based on an initiatory system with a series of degree ceremonies that use ritual drama to establish fraternal bonds and impart spiritual and philosophical teachings.

O.T.O. also includes the Ecclesia Gnostica Catholica (EGC) or Gnostic Catholic Church, which is the ecclesiastical arm of the Order. Its central rite, which is public, is the Gnostic Mass.

Ordo Templi Orientis Media

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  Organisation of O.T.O., the diagram (from 1926) in German shows the organization's original structure.

O.T.O.

• U.S. Grand Lodge, O.T.O.
• U.K. Grand Lodge, O.T.O.
• Australia Grand Lodge, O.T.O.
• The Canadian O.T.O. Archived 2009-01-30 at the Wayback Machine
• The Norwegian O.T.O
• The German O.T.O
• The Swedish O.T.O

Other organizations

• The Typhonian O.T.O.
• Societas O.T.O. Archived 2021-06-10 at the Wayback Machine
• O.T.O Foundation Archived 2010-01-18 at the Wayback Machine