Cognomen Duern (Duern 
) , across the world, is a very rare family name. The last name Duern is characteristic of Canada, where it is a rare surname, New Zealand, where it is a very rare surname, and the United Kingdom, where it is an extremely rare surname. In absolute terms, it is commonest in Canada, the United Kingdom, and the United States. Much less frequently, Duern is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Duern | United Kingdom, Australia, United States, Thailand, Canada |