Surname Hyoun (玄 
, 현 
, Hyoun 
) , in all the world, is a common last name. The surname Hyoun is characteristic of South Korea, where it is quite a common surname, China, where it is quite a rare surname, and Morocco, where it is a very rare surname. In absolute terms, it most frequently occurs in China, South Korea, and Indonesia. Likewise, Hyoun is the forename as well as the last name.