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