Cognomen Ongrak (Ongrak 
) , in the entire world, is a very rare surname. The surname Ongrak is characteristic of Thailand, where it is a very rare surname, and China, where it is an extremely rare surname. Very seldom, Ongrak is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Ongrak | Thailand, China |