Cognomen Delrrosario (Delrrosario 
) , in the world, is a very rare family name. The last name Delrrosario is habitual in Argentina, where it is an extremely rare surname, Venezuela, and China. Much less frequently, Delrrosario is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Delrrosario | Argentina, Venezuela, China |