Around the globe, Nedelcu (Nedelcu 
, Неделко 
, Неделку ) is quite a rare mostly male, but uncommonly girly given name. The forename Nedelcu is habitual in Bulgaria, where it is quite a common male name, Romania, where it is quite a rare unisex name, and Afghanistan, where it is a rare masculine name. More prevalently, Nedelcu is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Nedelcu | Bulgaria, Moldova, Italy, Romania, Spain |
| Неделко | Bulgaria, Kazakhstan, Ukraine, Russia |
| Неделку | Kazakhstan, Ukraine, Russia |