Surname Ongwattanakul (Ongwattanakul 
) , worldwide, is a very rare last name. The last name Ongwattanakul is characteristic of Bermuda, where it is quite a rare surname, Thailand, where it is a very rare surname, and China, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Ongwattanakul | Bermuda, China, United States, Thailand |