Cognomen Deponzi-Haas (Deponzi-Haas 
) , in all the world, is an extremely rare last name. The cognomen Deponzi-Haas is habitual in Northern America, particularly the United States, where it is an extremely rare surname. Parts of the name also exists independently as a last name Deponzi, and a last name Haas.
| VARIANT | COUNTRY |
|---|---|
| Deponzi-Haas | United States |