3rd-century Christians

Greco-Roman Christian traveller and historian (c.160–c.240)

King of Armenia and Saint

3rd century Alexandrian Christian philosopher

Christian apologist

Praxeas () was a Monarchian from Asia Minor who lived in the end of the 2nd century/beginning of the 3rd century. He believed in the unity of the Godhead and vehemently disagreed with any attempt at division of the personalities or personages of the Father, Son, and Holy Spirit in the Christian Church. He was opposed by Tertullian in his tract Against Praxeas (Adversus Praxean), and was influential in preventing the Roman Church from granting recognition to the New Prophecy.

Artemon () (fl. c. 230 AD), a prominent Christian teacher in Rome, who held Adoptionist, or Nontrinitarian views. Little is known about his life.

King of Osroene

Early Christian Apostolic apocrypha