Cognomen Diomediz (Diomediz 
) , globally, is an extremely rare last name. The family name Diomediz is characteristic of Latin America and the Caribbean, particularly Nicaragua, where it is a very rare surname, and Honduras. More frequently, Diomediz is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Diomediz | Peru, Honduras, Nicaragua, Philippines |