Last name Cwen (Cwen 
) , worldwide, is a very rare family name. The family name Cwen is characteristic of Poland, where it is a very rare surname, France, and the United Kingdom, where it is an extremely rare surname. In absolute terms, it is commonest in Poland, France, and China. More frequently, Cwen is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Cwen | France, Poland, United Kingdom, Malaysia, China |