Cognomen Ratap (Ratap 
) , in all the world, is quite a rare surname. The family name Ratap is habitual in India, where it is a very rare surname, Indonesia, and China, where it is an extremely rare surname. Very seldom, Ratap is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Ratap | Indonesia, China, Malaysia, India |