Across the world, Fäi (Fia 
, Fäi) is quite a common mostly female, but infrequently boy's forename. The given name Fäi is habitual in Sweden, where it is quite a rare girly name, Indonesia, where it is quite a rare mostly female, but seldom masculine name, and Ireland, where it is a rare girly name. Not in comparison with a country's population, the name is most common in Indonesia, Sweden, and Pakistan. Likewise, Fäi is the last name as well as the forename.