Arbius (Ancient Greek: Ἄρβιος) was a toponymic epithet of the Greek god Zeus, derived from Mount Arbias in Crete – in modern times, the hills and chasms near – where he was worshipped. It is also hypothesized that "Arbius" has some relationship to the Latin arbor ("tree"), as Zeus was known to have been worshipped as a tree god on Crete.