Cognomen Yongyuangkong (Yongyuangkong 
) , all around the world, is a very rare family name. The surname Yongyuangkong is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Yongyuangkong | Thailand |
Pramkamol, and Thikhumporn