Cognomen วิยะรัตน์ (วิยะรัตน์ 
, Viyarat 
) , around the globe, is a rare family name. The surname วิยะรัตน์ is habitual in South-eastern Asia, particularly Thailand, where it is a rare surname. Much less frequently, วิยะรัตน์ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| วิยะรัตน์ | Thailand |
| Viyarat | United States, Thailand, India |