Family name 鮎 (Ayu 
, アイ , 鮎 
) , globally, is a widespread surname. The surname 鮎 is characteristic of Indonesia, where it is a common surname, Japan, where it is quite a common surname, and Brunei (explore the name in all countries). Not in comparison with a country's population, it is commonest in Indonesia, Japan, and Taiwan. Also, 鮎 is the forename as well as the last name.