Family name ناتسو (Natsuo 
, Kirino 
, ناتسو 
) , around the world, is a common surname. The cognomen ناتسو is habitual in Japan, where it is quite a common surname, Peru, where it is a very rare surname, and Malaysia. In absolute terms, it most frequently occurs in Japan, Mexico, and Peru. Very seldom, ناتسو is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Natsuo | Brazil, China, Mexico, United States, Japan |
| Kirino | Philippines, Dominican Republic, Mexico, Japan, Peru |
| ناتسو | Saudi Arabia |