Simandu was an archdiocese of the Syriac Orthodox Church in Tzamandos, Cappadocia, attested between the tenth and twelfth centuries.
Thirteen of its bishops are mentioned in the lists of Michael the Syriac and other Jacobite sources.
In this Appendix Michael listed most of the bishops consecrated by the Syriac Orthodox patriarchs of Antioch between the ninth and twelfth centuries.
Two twelfth-century bishops omitted from Michael's list are mentioned in the Chronicon Ecclesiasticum of the Jacobite maphrian Bar Hebraeus (ob.1286).
[2] Two twelfth-century bishops of Simandu omitted from the lists of Michael the Syrian are mentioned in the Chronicon Ecclesiasticum of Bar Hebraeus: The diocese of Simandu seems to have lapsed around the end of the twelfth century, perhaps after the death of the bishop Basil (1139/1166).