Cognomen Ілона-Світлана (Ілона-Світлана 
) , around the globe, is an extremely rare surname. Much more frequently, Ілона-Світлана is the forename as well as the last name. Parts of the name also exists independently as a first name Ілона, and a first name Світлана.
| VARIANT | COUNTRY |
|---|---|
| Ілона-Світлана | Ukraine |