Across the world, Atthaya (Atthaya 
, อัฐญา , อาฒยา ) is a rare epicene given name. The forename Atthaya is habitual in South-eastern Asia, particularly Thailand, where it is a rare gender-neutral name, and Indonesia, where it is a very rare gender-neutral name. Much less frequently, Atthaya is the last name as well as the forename.