Surname Amornsittiwong (Amornsittiwong 
) , in all the world, is a very rare family name. The family name Amornsittiwong is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Amornsittiwong | Thailand |
Pisit, Somsak, and Kajornkiat