Family name Duarn (Duarn 
) , in the world, is a very rare surname. The family name Duarn is characteristic of Latin America and the Caribbean, particularly Colombia, where it is a very rare surname, Venezuela, and Mexico, where it is an extremely rare surname. Much less frequently, Duarn is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Duarn | Mexico, Colombia, Thailand, United States, Venezuela |