Surname ダヨン (Dayoung 
, ダヨン 
) , in all the world, is a rare last name. The last name ダヨン is characteristic of South Korea, where it is a rare surname, Japan, where it is a very rare surname, and Nigeria, where it is an extremely rare surname. In absolute terms, it most frequently occurs in Eastern Asia, particularly South Korea, Japan, and China. Much more prevalently, ダヨン is the forename as well as the last name.