Last name Риа (Ria 
, Rya 
, Риа 
) , across the world, is a common cognomen. The last name Риа is characteristic of Indonesia, where it is quite a common surname, Algeria, and Brunei, where it is quite a rare surname. In absolute terms, the name is most common in Indonesia, Bangladesh, and Algeria. More frequently, Риа is the forename as well as the last name.