Surname アイヤ (Ayya 
, Aija 
, アイヤ) , in the world, is quite a common cognomen. The cognomen アイヤ is habitual in Maldives, where it is quite a common surname, Sri Lanka, where it is quite a rare surname, and Estonia. Measured by absolute frequency, the name is most common in India, Sri Lanka, and Indonesia. More prevalently, アイヤ is the forename as well as the last name.