Globally, Diefer (Diefer 
) is a very rare predominantly masculine, but very infrequently feminine first name. The given name Diefer is characteristic of Latin America and the Caribbean, particularly Brazil, where it is an extremely rare largely male, but uncommonly female name. Very seldom, Diefer is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Diefer | Germany, Spain, Colombia, United States, Brazil |