Surname รัตนสินธิ์ (รัตนสินธิ์ 
) , all around the world, is an extremely rare last name. The cognomen รัตนสินธิ์ is characteristic of South-eastern Asia, particularly Thailand, where it is an extremely rare surname. Likewise, รัตนสินธิ์ is the forename as well as the last name.