Surname Fenrir (Fenrir 
) , in the world, is a rare family name. The cognomen Fenrir is characteristic of Indonesia, where it is a very rare surname, France, and Vietnam, where it is an extremely rare surname. Not in comparison with a country's population, it is commonest in Indonesia, China, and France. Much less frequently, Fenrir is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Fenrir | Indonesia, Vietnam, China, France, United States |
Fenrisúlfr, and Фенрир