Last name Aruno (Aruno 
, อรุโณ , อรุณโณ ) , across the world, is a rare cognomen. The last name Aruno is characteristic of Thailand, where it is a rare surname, Nigeria, and South Africa, where it is an extremely rare surname. Measured by absolute frequency, it is the most numerous in Nigeria, Thailand, and India. Likewise, Aruno is the forename as well as the last name.