Family name Onofer (Onofer 
) , in the world, is a rare surname. The cognomen Onofer is characteristic of Slovakia, where it is quite a rare surname, Hungary, where it is a rare surname, and Argentina, where it is an extremely rare surname. In absolute terms, it is the most numerous in Slovakia, Hungary, and the United States. Very seldom, Onofer is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Onofer | Philippines, Argentina, United States, Slovakia, Hungary |