Arunas is a Lithuanian male given name derived from the Indo-European root 'ar' meaning 'swift' or 'moving quickly'. It was popularized by the Baltic god of war and thunder, Perkūnas, who was often depicted as driving a swift chariot. The name has been traditionally used in Lithuania and other Baltic regions, with variations such as Arvydas and Arvydas being more commonly found today.
The name Arunas saw fluctuations in its popularity over these years, with a notable gap of three years between the first and second occurrences.