In the entire world, រ៉ាយូ (រ៉ាយូ 
) is a rare mostly masculine, but infrequently female given name. The forename រ៉ាយូ is habitual in South-eastern Asia, particularly Cambodia, where it is quite a rare dominantly male, but infrequently female name. Much less frequently, រ៉ាយូ is the last name as well as the forename.