Cognomen ไทยธวัชรวงษ์ (ไทยธวัชรวงษ์ 
) , throughout the world, is a very rare last name. The family name ไทยธวัชรวงษ์ is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| ไทยธวัชรวงษ์ | Thailand |
ณัฐฐชัย, and กาญจน์ณภัทร