Family name Rowsen (Rowsen 
) , globally, is an extremely rare last name. The surname Rowsen is habitual in Israel, where it is a very rare surname, the United Kingdom, where it is an extremely rare surname, and the United States. Likewise, Rowsen is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Rowsen | United Kingdom, Israel, India, United States, Turkey |