Worldwide, Silvia Dayana (Silvia Dayana 
) is a very rare female given name. The first name Silvia Dayana is habitual in Latin America and the Caribbean, particularly Costa Rica, where it is a rare girly name. Also, Silvia Dayana is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Silvia Dayana | Spain, Bolivia, Chile, Ecuador, Costa Rica |