Family name Nyky (Ники 
, Nyky 
) , all over the world, is a rare cognomen. The surname Nyky is habitual in Romania, where it is a rare surname, Bulgaria, and Nicaragua, where it is a very rare surname. Not in comparison with a country's population, it is commonest in Eastern Europe, particularly Romania, Bulgaria, and Russia. More prevalently, Nyky is the forename as well as the last name.