Last name Diader (Diader 
) , in the world, is an extremely rare family name. The surname Diader is habitual in Latin America and the Caribbean, particularly Nicaragua, where it is a very rare surname, and Honduras. More frequently, Diader is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Diader | Italy, Philippines, Colombia, United States, Nicaragua |