Across the world, ناسو (Naso 
, Nasu , Nassau 
) is quite a common gender-neutral first name. The forename ناسو is characteristic of Botswana, where it is quite a rare feminine name, Lebanon, where it is quite a rare epicene name, and Sudan, where it is quite a rare feminine name. In absolute terms, the name is most common in India, Sudan, and Nigeria. Likewise, ناسو is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Nasu, Naso | Japan, Italy, Malaysia, United States, India |
| Nassau | United States, India, Argentina, France, Brazil |
| ناسو | Syria, Iraq, Egypt |