Cognomen Dadner (Dadner 
) , across the world, is an extremely rare family name. The surname Dadner is habitual in Latin America and the Caribbean, particularly Venezuela, where it is an extremely rare surname, and Argentina. More prevalently, Dadner is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Dadner | Argentina, Brazil, Peru, Venezuela, Colombia |