An Oratorian is a member of one of the following religious orders: *

Oratory of Saint Philip Neri The Confederation of Oratories of Saint Philip Neri (), abbreviated C.O. and commonly known as the Oratorians, is a Catholic Church, Catholic society of apostolic life of pontifical right for men (priests and Religious brother, religious brot ...

(Roman Catholic), who use the postnominal letters C.O. *

Oratory of Jesus The Congregation of the Oratory of Jesus and Mary Immaculate (, ), best known as the French Oratory or Oratory of Jesus, is a society of apostolic life of Catholic priests founded in 1611 in Paris, France, by Pierre de Bérulle (1575–1629), w ...

(Roman Catholic) *

Oratory of the Good Shepherd The Oratory of the Good Shepherd (OGS) is a dispersed international religious community, within the Anglican Communion. Members of the oratory are bound together by a common rule and discipline, which requires consecrated celibacy, and are strength ...

(Anglican) *

Teologisk Oratorium Theologisk Oratorium (''Theological Oratory'') is a Lutheran, moderately high church, religious Brotherhood for men in the Church of Denmark. It was founded in 1927. Dissolved in 2016. Foundation Thomas Lønborg-Jensen had been in England in 1926 a ...

(Lutheran)

See also