Surname Thillaimuthu (Thillaimuthu 
) , throughout the world, is a very rare family name. The cognomen Thillaimuthu is habitual in Malaysia, where it is a rare surname, Australia, and India, where it is an extremely rare surname. Very seldom, Thillaimuthu is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Thillaimuthu | Australia, Malaysia, India |