Family name Аоки (Aoki 
, 青木 , Yû 
) , globally, is a common surname. The surname Аоки is habitual in Japan, where it is quite a rare surname, Brazil, and Singapore. Not in comparison with a country's population, this name is the most popular in Brazil, Japan, and the United States. Very seldom, Аоки is the forename as well as the last name.