Family name Yañiz (Yañiz 
) , throughout the world, is an extremely rare last name. The family name Yañiz is habitual in Argentina, where it is a very rare surname, and Spain, where it is an extremely rare surname. Much less frequently, Yañiz is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Yañiz | Spain, Argentina |