Cognomen Rathya (Rathya 
) , worldwide, is a very rare family name. The last name Rathya is characteristic of Tunisia, where it is a rare surname, and India, where it is an extremely rare surname. More frequently, Rathya is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Rathya | India, United States, Tunisia |