Cognomen Viswamani (Viswamani 
) , around the world, is a very rare surname. The last name Viswamani is habitual in the United States, where it is an extremely rare surname, and India. More prevalently, Viswamani is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Viswamani | United States, India |