Religious orders

thumb|200px|right|Dervish with a lion and a tiger, Mughal painting, thumb|200px|right|Ottoman Turks|Ottoman Dervish portrayed by [[Amedeo Preziosi, , Muzeul Naţional de Artă al României]]

subgroup within a larger confessional community with a distinctive high-religiosity lifestyle and clear membership

Catholic religious order

unincorporated fraternal religious order of the Church of Scientology

The Ctistae or Ktistai () were an ascetic group or class among the ancient Mysians.