Cognomen วิริยะสุทธิ (วิริยะสุทธิ 
) , throughout the world, is an extremely rare family name. The cognomen วิริยะสุทธิ is characteristic of South-eastern Asia, particularly Thailand, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| วิริยะสุทธิ | Thailand |