Surname Sriyaphong (Sriyaphong 
) , in the world, is a very rare last name. The cognomen Sriyaphong is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Sriyaphong | Thailand |
Uthai, Phrauthai, Roongporn, and Phra Uthai