Family name Ratuah (Ratuah 
) , all around the world, is a very rare last name. The family name Ratuah is habitual in South-eastern Asia, particularly Indonesia, where it is a very rare surname, and Malaysia, where it is an extremely rare surname. Also, Ratuah is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Ratuah | Indonesia, Malaysia |