Across the world, نسب (Nasab 
, Nassab 
, نسب 
) is quite a rare unisex first name. The forename نسب is habitual in Lebanon, where it is quite a rare girly name, Pakistan, where it is a rare dominantly boy's, but uncommonly female name, and Syria, where it is a rare feminine name. Not in comparison with a country's population, it is commonest in Pakistan, Lebanon, and India. More frequently, نسب is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Nasab | Iran, Pakistan, United States, Syria, Lebanon |
| Nassab | Iran, United States, India, Syria, Lebanon |
| نسب | Iran, Iraq, Jordan, Egypt, Syria |