Surname Ong Huat (Ong Huat 
) , in the entire world, is a very rare family name. The surname Ong Huat is habitual in Malaysia, where it is a very rare surname, and China, where it is an extremely rare surname. Also, Ong Huat is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Ong Huat | Malaysia, China |