Surname Khayanwong (Khayanwong 
) , around the globe, is an extremely rare cognomen. The last name Khayanwong is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Khayanwong | Thailand |
Orasa, Winai, Somjit, and Phattharakon