Family name Hyun-Joo (현주 
, Hyun-Joo 
) , in the entire world, is an extremely rare last name. The last name Hyun-Joo is characteristic of Northern America, particularly the United States, where it is an extremely rare surname. Much more prevalently, Hyun-Joo is the forename as well as the last name. Parts of the name also exists independently as a last name Hyun, and a first name Joo.