Qlaudia (or Claudia) was a diocese in the Syriac Orthodox metropolitan province of Melitene (Malatya), attested between the tenth and thirteenth centuries.
In this Appendix Michael listed most of the bishops consecrated by the Jacobite patriarchs of Antioch between the ninth and twelfth centuries.
Or Laqabin, ʿArqa, Qlisura, Semha, Gubos, Qlaudia and Gargar—the seven dioceses around Melitene—where not a soul remains?
[3] Despite the gloomy testimony of Bar Hebraeus, there is evidence that the diocese of Qlaudia continued to exist at this period.
According to the colophon of a contemporary manuscript, the metropolitan Ignatius 'of Qlaudia, which is Qust', was among the fifteen bishops consecrated by the patriarch Philoxenus Nemrud (1283–92).