Family name อ่อนอรุณ (Onaroon 
, อ่อนอรุณ) , in all the world, is a very rare surname. The last name อ่อนอรุณ is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname. More frequently, อ่อนอรุณ is the forename as well as the last name.