Basil or Basilius (Ancient Greek: Βασιλείος) or Βασίλιος) of Cilicia was the author of a history of the Church in three books, called Ecclesiastical History, of which Photios I of Constantinople gives a short account. Photius considered him a Nestorian.
Basil also wrote a work against John of Scythopolis, and one against Archelaus, bishop of Carrhae. He lived under the emperor Anastasius I Dicorus, was presbyter at Antioch about 497 CE, and afterwards bishop of Irenopolis.
This article incorporates text from a publication now in the public domain: Smith, Philip (1870). "Basilius (3)". In Smith, William (ed.). Dictionary of Greek and Roman Biography and Mythology. Vol. 1. p. 468.