Last name Ratanakaran (Ratanakaran 
) , around the globe, is a very rare family name. The cognomen Ratanakaran is habitual in Thailand, where it is a rare surname, and India, where it is an extremely rare surname. Very seldom, Ratanakaran is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Ratanakaran | India, Thailand |