The Cyrtians or Kyrtians (gr. Κύρτιοι Kýrtioi, lat. Cyrtii) was an ancient tribe in historic Persia. Their name is a candidate for the nominal ancestor of the ethnonym of the Kurdish people.
According to Rüdiger Schmitt, a tribe dwelling mainly in the mountains of Atropatenian Media together with the Cadusii, Amardi (or “Mardi”), Tapyri, and others (Strabo 11.13.3). Strabo characterized the Cyrtians living in Persia as migrants and predatory brigands.