Surname รัตนวงศะวัต (รัตนวงศะวัต 
) , in all the world, is an extremely rare last name. The last name รัตนวงศะวัต is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| รัตนวงศะวัต | Thailand |