Family name Ольга-Ганна (Ольга-Ганна 
) , all around the world, is an extremely rare last name. Much more frequently, Ольга-Ганна is the forename as well as the last name. Parts of the name also exists independently as a first name Ольга, and a first name Ганна.
| VARIANT | COUNTRY |
|---|---|
| Ольга-Ганна | Ukraine |