Last name Ylsen (Ylsen 
) , all around the world, is a very rare surname. The last name Ylsen is habitual in Latin America and the Caribbean, particularly Venezuela, where it is a rare surname, Peru, where it is an extremely rare surname, and Argentina. More prevalently, Ylsen is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Ylsen | Peru, Spain, Venezuela, Bolivia, United States |