Family name Nyku (Nyku 
, Нику 
) , around the globe, is a rare last name. The surname Nyku is characteristic of Romania, where it is a rare surname, Russia, where it is a very rare surname, and Chile, where it is an extremely rare surname. Not in comparison with a country's population, it is the most numerous in Romania, Russia, and India. Also, Nyku is the forename as well as the last name.