Family name エイヤ (Eija 
, エイヤ 
) , worldwide, is a rare surname. The family name エイヤ is habitual in Finland, where it is quite a rare surname, Malaysia, where it is a rare surname, and Sweden. In absolute terms, the name is most common in Finland, Malaysia, and Japan. More prevalently, エイヤ is the forename as well as the last name.