Cognomen Ratnavelu (Ratnavelu 
) , throughout the world, is a rare last name. The surname Ratnavelu is characteristic of Malaysia, where it is a rare surname, India, where it is an extremely rare surname, and the United Kingdom. Also, Ratnavelu is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Ratnavelu | United Kingdom, India, United States, Malaysia |
| kuranathan ratnavelu Ph.D. Flinders University of South Australia |
|