Surname Недялка (Недялка 
, Nedyalka 
, Nedialka 
) , worldwide, is quite a rare last name. The cognomen Недялка is characteristic of Bulgaria, where it is quite a common surname, Greece, where it is a rare surname, and Spain, where it is a very rare surname. Likewise, Недялка is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Недялка | Bulgaria, Belarus, Russia, Kazakhstan |
| Nedyalka | Spain, Bulgaria, Romania, Greece, United States |
| Nedialka | Spain, Bulgaria, United States, Italy, Greece |