Cognomen Santos-Diaz (Santos-Diaz 
) , all over the world, is a very rare family name. The last name Santos-Diaz is characteristic of Philippines, where it is an extremely rare surname, and the United States. Parts of the name also exists independently as a last name Santos, and a last name Diaz.
| VARIANT | COUNTRY |
|---|---|
| Santos-Diaz | Philippines, United States |
| alejandro santos-diaz researcher |
|