Surname Riro (Riro 
, รีรอ 
) , all over the world, is quite a rare cognomen. The cognomen Riro is habitual in Lebanon, where it is quite a rare surname, Kenya, where it is a rare surname, and Algeria. Not in comparison with a country's population, it is the most numerous in Kenya, Algeria, and Tanzania. Also, Riro is the forename as well as the last name.