Cognomen រ៉ូហ្សាន់ (រ៉ូហ្សាន់ 
) , in the entire world, is an extremely rare last name. The cognomen រ៉ូហ្សាន់ is habitual in South-eastern Asia, particularly Cambodia, where it is a very rare surname. Also, រ៉ូហ្សាន់ is the forename as well as the last name.