Globally, Diostina (Diostina 
) is a very rare feminine first name. The given name Diostina is habitual in Romania, where it is a rare feminine name, and Philippines, where it is a very rare feminine name. Very seldom, Diostina is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Diostina | Philippines, Romania, Venezuela, Brazil |