Surname Itthiwatpinyo (Itthiwatpinyo 
) , in the world, is a very rare family name. The family name Itthiwatpinyo is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Itthiwatpinyo | Thailand |
Kitipat, and Thanyakarn