Family name Thiruchchelvam (Thiruchchelvam 
) , all around the world, is a rare cognomen. The cognomen Thiruchchelvam is characteristic of Sri Lanka, where it is quite a rare surname, Switzerland, where it is a rare surname, and the United Kingdom, where it is an extremely rare surname. Much less frequently, Thiruchchelvam is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Thiruchchelvam | United Kingdom, Switzerland, United States, Sri Lanka |