Cognomen Nagenthiram (Nagenthiram 
) , around the globe, is a rare family name. The surname Nagenthiram is characteristic of Sri Lanka, where it is a rare surname, Switzerland, where it is a very rare surname, and Canada. Not in comparison with a country's population, the name is most common in Sri Lanka, the United Kingdom, and Canada. Much less frequently, Nagenthiram is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Nagenthiram | Canada, France, United Kingdom, Sri Lanka, Switzerland |