All over the world, Waini (Waini 
) is a rare gender-neutral forename. The given name Waini is habitual in Tanzania, where it is a very rare male name, Indonesia, where it is a very rare female name, and Nigeria, where it is a very rare epicene name. Measured by absolute frequency, it most frequently occurs in Indonesia, Nigeria, and India. Also, Waini is the last name as well as the forename.