Surname Rajarathanam (Rajarathanam 
) , in the entire world, is a very rare last name. The surname Rajarathanam is habitual in Malaysia, where it is a rare surname, Canada, where it is an extremely rare surname, and India. Also, Rajarathanam is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Rajarathanam | Malaysia, Canada, India, South Africa |