Arijus is a Lithuanian masculine given name, derived as a Lithuanian form of the Greek name Arius. Arius itself is the Latinized form of the Greek Areios, which originates from the name of the Greek god Ares. Ares, in Greek mythology, was the war god associated with bloodlust. The name Ares may come from the Greek arē, meaning "bane" or "ruin," or arsen, meaning "male." Traced further back, the name's root links to Zeus, the highest god, whose name derives from Proto-Indo-European *Dyēws, related to "sky" or "shine." Among related forms, Areios appears in Ancient Greek and Ārijs is the Latvian equivalent.