Cognomen วิรุฬหธรรมรัต (วิรุฬหธรรมรัต 
) , around the globe, is an extremely rare family name. The last name วิรุฬหธรรมรัต is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| วิรุฬหธรรมรัต | Thailand |