In all the world, リソ (Riso 
, リソ) is quite a rare unisex first name. The forename リソ is characteristic of Slovakia, where it is quite a rare male name, Georgia, where it is a rare principally female, but very seldom masculine name, and Japan, where it is a rare girly name. In absolute terms, it is commonest in India, Japan, and Ethiopia. Likewise, リソ is the last name as well as the forename.