Cognomen Franz-Dupré-Leblanc (Franz-Dupré-Leblanc 
) , in all the world, is an extremely rare family name. Much more frequently, Franz-Dupré-Leblanc is the forename as well as the last name. Parts of the name also exists independently as a first name Franz, a last name Dupré, and a last name Leblanc.
| VARIANT | COUNTRY |
|---|---|
| Franz-Dupré-Leblanc | Democratic Republic of the Congo |