Helmuth Theodor Bossert was a German and Turkish art historian, philologist and archaeologist. He is best known for his excavations of the Hittite fortress city at Karatepe, Turkey, and the discovery of bilingual inscriptions, which enabled the translation of Hittite hieroglyphs.

Karatepe is a late Hittite fortress and open-air museum in Osmaniye Province in southern Turkey lying at a distance of about 23 km from the district center of Kadirli. It is sited in the Taurus Mountains, on the right bank of the Ceyhan River. The site is contained within Karatepe-Aslantaş National Park.