Tarḫunz (Stem: Tarḫunt-) was the weather god and chief god of the Luwians, a people of Bronze Age and early Iron Age Anatolia. He is closely associated with the Hittite god Tarḫunna and the Hurrian god Teshub.
The name of the Proto-Anatolian Weather god can be reconstructed as *Tṛḫu-ent-, a participle form of the Proto-Indo-European root, *terh2; Hittite, tarḫu-, meaning "to cross over, pass through, overcome" (also the source of the Latin word trans-, the Dutch "door", German word durch, and the English through). The same name was used in almost all Anatolian languages (Hittite: Tarḫunna-; Carian: Trquδ- and Lycian: Trqqas (A), Trqqiz (B), which was identified with Zeus).
In Luwian Cuneiform of the Bronze Age, his name appears as Tarḫunt- (Tarḫuwant- in the oldest texts). He is also named using the Sumerograms dU ("God 10") or dIM ("God Wind"). In Hieroglyphic Luwian, his name was written as Tarhunza- and Tarhunta-or with the ideograms (DEUS) TONITRUS ("God Thunder").
The god's name often appears in personal names. The oldest example is "Tarḫuan", known from a 19th-century BC Hittite text from Kültepe. Among the Luwians it was customary for people to bear a simple god's name, but names were often combined. In the Bronze Age and Early Iron Age, these names are ery common. The latest examples derive from Hellenistic southern Anatolia, like Tarkumbios (Ταρκυμβίος, luw. *Tarhun-piya- "Tarhun-Gift“) or Trokombigremis (Τροκομβίγρεμις; *Tarhun-pihra-mi- "Shining Tarhun") which are attested in Cilicia.