Across the world, Байи (Baji 
, Bayi 
, Bailly 
) is a common epicene first name. The given name Байи is habitual in India, where it is quite a rare epicene name, Laos, where it is quite a rare female name, and Cameroon, where it is quite a rare male name. Measured by absolute frequency, it is the most numerous in India, Indonesia, and Nigeria. Likewise, Байи is the last name as well as the forename.