Surname ニキ (Niki 
, ニキ 
) , all over the world, is a common family name. The cognomen ニキ is characteristic of Greece, where it is a common surname, Curacao, where it is quite a common surname, and North Macedonia, where it is quite a rare surname. Measured by absolute frequency, it most frequently occurs in Greece, Indonesia, and India. More frequently, ニキ is the forename as well as the last name.