The name of the city is derived from Persian compound, kuhan/quhan diz, "old/ancient fort" or from Turkic konak/konut ("residence, palace, court, housing, established dwelling area, city, town, village"), from Proto-Turkic *kon-, "to settle down/to perch."
Interestingly, until the 1960s, the city served as the capital to the now-defunct province of Qataqan, itself meaning "Old/Ancient city" (from Turkic kata ("old/ancient') and Eastern Iranian (Sogdian) kand or Common Turkic kent, "fort", "town").