Surname Pentinen (Pentinen 
) , around the world, is a very rare last name. The last name Pentinen is characteristic of Estonia, where it is quite a rare surname, Finland, where it is a rare surname, and Russia, where it is an extremely rare surname. In absolute terms, it is commonest in Estonia, Finland, and the United States. Much less frequently, Pentinen is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Pentinen | Estonia, Finland, Russia, United States, India |