Last name Osvaldo Dario (Osvaldo Dario 
) , all around the world, is a very rare cognomen. The surname Osvaldo Dario is habitual in Latin America and the Caribbean, particularly Chile, where it is a very rare surname. More frequently, Osvaldo Dario is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Osvaldo Dario | Costa Rica, Chile, Italy, Spain, Argentina |