Surname Rahunathan (Rahunathan 
) , all over the world, is an extremely rare last name. The last name Rahunathan is characteristic of Canada, where it is a very rare surname, the United Kingdom, where it is an extremely rare surname, and Malaysia. Much less frequently, Rahunathan is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Rahunathan | United Kingdom, United States, Malaysia, Canada |