Cognomen Rajavelu (Rajavelu 
) , globally, is a rare last name. The surname Rajavelu is habitual in United Arab Emirates, where it is a rare surname, Malaysia, and Singapore, where it is a very rare surname. In absolute terms, it is commonest in India, Malaysia, and the United States. More prevalently, Rajavelu is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Rajavelu | United Arab Emirates, Malaysia, Australia, United States, India |
| t. a. rajavelu Indian politician, IN |
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| p. rajavelu Indian politician, IN |
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| premraj rajavelu Indian cricketer (b. 1991) |
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