Cognomen Rulah (Rulah 
) , all over the world, is a very rare family name. The last name Rulah is habitual in Malaysia, where it is a rare surname, Indonesia, where it is a very rare surname, and India, where it is an extremely rare surname. Much less frequently, Rulah is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Rulah | Indonesia, Malaysia, Philippines, United States, India |