Family name Nirsi (Nirsi 
) , worldwide, is a very rare last name. The cognomen Nirsi is characteristic of Venezuela, where it is a very rare surname, Mexico, where it is an extremely rare surname, and India. Predominantly, Nirsi is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Nirsi | Philippines, Mexico, India, Brazil, Venezuela |