Throughout the world, Sonii (Sonii 
) is a rare epicene forename. The first name Sonii is habitual in India, where it is a very rare dominantly female, but infrequently boy's name, Indonesia, where it is a very rare boy's name, and Colombia, where it is a very rare female name. Not in comparison with a country's population, the name is most common in India, Indonesia, and Mexico. More prevalently, Sonii is the last name as well as the forename.