Niy

Niy or niy can refer to:


 * Ngiti language, a language spoken in the Democratic Republic of the Congo, by ISO 639-3 code
 * Niya Kingdom (also spelled "Niy"), an ancient kingdom in Syria mentioned around the 14th century BCE
 * NiY, one of the nickel compounds in chemistry
 * Niy, a place where ancient Egyptian pharaoh Thutmose I was said to have gone elephant hunting