Surname Нильга (Nilga 
, Нильга 
) , worldwide, is a rare cognomen. The cognomen Нильга is habitual in Paraguay, where it is quite a rare surname, Kazakhstan, where it is a rare surname, and Russia, where it is an extremely rare surname. Much less frequently, Нильга is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Nilga | Germany, Paraguay, India, Argentina, Brazil |
| Нильга | Kazakhstan, Russia, Ukraine |