Cognomen Mohanathasan (Mohanathasan 
) , across the world, is a very rare surname. The surname Mohanathasan is characteristic of Canada, where it is a very rare surname, Australia, and the United Kingdom. Much less frequently, Mohanathasan is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Mohanathasan | Canada, United Kingdom, Australia, United States |