Kaunos (Carian: Kbid;Lycian: Khbide; Ancient Greek: Καῦνος; Latin: Caunus) was a city of ancient Caria and in Anatolia, a few km west of the modern town of Dalyan, Muğla Province, Turkey.
The Calbys river (now known as the Dalyan river) was the border between Caria and Lycia. Initially Kaunos was a separate state; then it became a part of Caria and later still of Lycia.