In the entire world, Niil (Niil 
) is a very rare dominantly male, but infrequently female given name. The first name Niil is characteristic of Nigeria, where it is a very rare mostly masculine, but infrequently girly name, and India, where it is an extremely rare mostly masculine, but infrequently girly name. More frequently, Niil is the last name as well as the forename.