Across the world, Thavarajah (Thavarajah 
) is a rare boy's forename. The forename Thavarajah is habitual in Sri Lanka, where it is quite a rare male name, and Malaysia, where it is a very rare male name. More prevalently, Thavarajah is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Thavarajah | United Kingdom, France, Malaysia, Sri Lanka, Canada |