Niia is a ♀ female name.
Niia is a variant of the name Nia, which is a Welsh variant of the Irish name Niamh, but as well an African name and a short form of names like Eugenia.
Niia means “bright” (from Niamh), “dissolution” (Suaheli), “luck” (Setswana) and “well born” (from Eugenia).