Surname Retnaswamy (Retnaswamy 
) , globally, is a very rare family name. The family name Retnaswamy is characteristic of Singapore, where it is a rare surname, India, where it is an extremely rare surname, and the United States. Also, Retnaswamy is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Retnaswamy | India, United States, Singapore |