Cognomen ניאגו (Neagu 
, ניאגו 
) , worldwide, is a common family name. The last name ניאגו is habitual in Romania, where it is a common surname, Moldova, where it is quite a common surname, and Cyprus, where it is quite a rare surname. Not in comparison with a country's population, this name is the most popular in Romania, Moldova, and Italy. Much less frequently, ניאגו is the forename as well as the last name.