Last name ويلين (Wellin 
, Welwyn 
, ويلين) , all over the world, is a rare family name. The family name ويلين is characteristic of Sweden, where it is a rare surname, Belgium, and Canada, where it is a very rare surname. In absolute terms, it is commonest in the United States, Indonesia, and Sweden. Also, ويلين is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Wellin | Philippines, Sweden, Brazil, United States, Indonesia |
| Welwyn | Canada, Philippines, United Kingdom, United States, India |