Family name Rattanak (Rattanak 
) , all around the world, is a very rare last name. The surname Rattanak is habitual in Cambodia, where it is a rare surname, and the United States, where it is an extremely rare surname. More frequently, Rattanak is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Rattanak | Australia, Cambodia, United States, India, France |