Family name Thevananthan (Thevananthan 
) , all around the world, is a rare last name. The surname Thevananthan is characteristic of Sri Lanka, where it is a rare surname, Malaysia, and Canada, where it is an extremely rare surname. Also, Thevananthan is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Thevananthan | Canada, Sri Lanka, Malaysia |