Cognomen Daddano (Daddano 
) , throughout the world, is an extremely rare last name. The cognomen Daddano is habitual in Northern America, particularly the United States, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Daddano | United States |
| william daddano, sr. American mobster (1912-1975) (b. 1912) |
|