Family name រ៉ិទ្ធ (រ៉ិទ្ធ 
) , in the entire world, is an extremely rare last name. The cognomen រ៉ិទ្ធ is characteristic of South-eastern Asia, particularly Cambodia, where it is a very rare surname. Likewise, រ៉ិទ្ធ is the forename as well as the last name.