Family name Ratanak (Ratanak 
) , around the globe, is a rare last name. The last name Ratanak is characteristic of South-eastern Asia, particularly Cambodia, where it is a rare surname, Vietnam, where it is a very rare surname, and Indonesia. Also, Ratanak is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Ratanak | Australia, United States, India, Indonesia, Cambodia |