Globally, Alahan (Alahan 
, Алахан 
) is a rare dominantly male, but infrequently girly given name. The forename Alahan is habitual in Kazakhstan, where it is a rare girly name, Bangladesh, where it is a very rare boy's name, and Mexico. Not in comparison with a country's population, it is the most numerous in India, Bangladesh, and Kazakhstan. Also, Alahan is the last name as well as the forename.
Alahan is also a name for the fictitious and mythical characters: .