Family name Nirab (Nirab 
) , in the world, is quite a rare surname. The cognomen Nirab is characteristic of Oman, where it is a rare surname, Bangladesh, and Kuwait. Measured by absolute frequency, this name is the most popular in Bangladesh, Saudi Arabia, and Oman. More frequently, Nirab is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Nirab | Saudi Arabia, India, Nepal, Oman, Bangladesh |