Surname Рилка (Рилка 
, Rilka 
) , throughout the world, is quite a rare last name. The surname Рилка is habitual in Bulgaria, where it is quite a common surname, Germany, where it is a very rare surname, and Canada, where it is an extremely rare surname. Likewise, Рилка is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Рилка | Bulgaria |
| Rilka | Bolivia, Brazil, Germany, India, Bulgaria |