The Apostolic Church-Ordinance (or Apostolic Church-Order, Apostolic Church-Directory or Constitutio Ecclesiastica Apostolorum) is an Oriental Orthodox Christian treatise which belongs to genre of the Church Orders. The work can be dated at the end of 3rd century CE. The provenience is usually regarded as Egypt, or perhaps Syria. The author is unknown. This text served as a law-code for the Coptic, Ethiopian Orthodox and other Oriental Orthodox churches. It superseded in authority and esteem the Didache, under which name it sometimes went.