Family name Dielvy-Diffel (Dielvy-Diffel 
) , around the world, is an extremely rare surname. Much more frequently, Dielvy-Diffel is the forename as well as the last name. Parts of the name also exists independently as a first name Dielvy, and a last name Diffel.
| VARIANT | COUNTRY |
|---|---|
| Dielvy-Diffel | Democratic Republic of the Congo |