Family name Thenarasu (Thenarasu 
) , all over the world, is a rare cognomen. The last name Thenarasu is characteristic of Malaysia, where it is a rare surname, Singapore, where it is a very rare surname, and India, where it is an extremely rare surname. Very seldom, Thenarasu is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Thenarasu | Malaysia, Singapore, India |