Ario is a short name of uncertain origin; it is usually explained as a Persian form of Arya, "noble", borne by the ancient general Ariobarzanes, and in Italy it is a rare given name on the pattern of Dario. Its two syllables and o ending suit the current taste for names like Arlo and Milo. Ario was rare in 2015 at number 5073 and has climbed steadily to number 2944 in 2025, its best rank so far.