Ordo Templi Orientis

Ordo Templi Orientis, usually abbreviated O.T.O., is an initiatory organization associated with Thelema. Its U.S. Grand Lodge describes two principal areas of work: a system of ceremonial initiation and the religious activity of Ecclesia Gnostica Catholica, whose central public ceremony is the Gnostic Mass.^[1]

Origins and Thelemic development#

The order's official history traces its early development through Carl Kellner and Theodor Reuss. Its initial structure borrowed from several Masonic and related rites. Aleister Crowley subsequently revised the order's ceremonies and gave The Book of the Law a central place in its teaching. The modern order states that it is not a Masonic organization.^[2]

Thelema's emphasis on discovering and carrying out one's will informs O.T.O.'s religious and philosophical outlook. The organization gives this outlook a communal form through initiation, instruction, and local bodies. It should not be equated with every individual or group that accepts Crowley's writings.

Initiation and public worship#

The U.S. Grand Lodge distinguishes Camps, Oases, and Lodges, each with different responsibilities. Some activities are open to interested visitors; initiation and other work have membership requirements. The Gnostic Mass is a liturgy with officers, a congregation, and a Eucharistic conclusion. Its public form is quite different from a solitary grimoire operation.^[1]

O.T.O. is useful context for articles on Ceremonial magic, religious organization, and modern occult publishing. It is a Thelemic order, not a branch of the Church of Satan, Temple of Set, or High Satanic Church. Similar vocabulary about will or initiation does not establish a shared theology.

See also#

• Thelema
• Aleister Crowley
• Gnostic Mass

This encyclopedia covers traditions beyond the High Satanic Church. Church doctrine is identified as such when it appears.