Cognomen Йорданка (Йорданка 
, Jordanka 
, Iordanka 
) , in the world, is a common family name. The cognomen Йорданка is habitual in Bulgaria, where it is a common surname, North Macedonia, where it is quite a common surname, and Bosnia and Herzegovina, where it is quite a rare surname. Also, Йорданка is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Йорданка | Bulgaria, Ukraine, Russia |
| Jordanka | Bulgaria, Cuba, Bosnia and Herzegovina, United States, North Macedonia |
| Iordanka | Bulgaria, France, United States, Greece, Spain |