Surname Peñin (Peñin 
) , globally, is a rare last name. The cognomen Peñin is habitual in Argentina, where it is a rare surname, Spain, and Peru, where it is a very rare surname. Also, Peñin is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Peñin | Peru, Venezuela, Spain, Argentina |