Cognomen Ruangphongsiri (Ruangphongsiri 
) , around the world, is a very rare family name. The cognomen Ruangphongsiri is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname. Much less frequently, Ruangphongsiri is the forename as well as the last name.
Chananya, Thongkorn, and Prapassorn