Family name Eun-Sook (은숙 
, Eun-Sook 
) , around the globe, is an extremely rare surname. The last name Eun-Sook is characteristic of Northern America, particularly the United States, where it is an extremely rare surname. Much more prevalently, Eun-Sook is the forename as well as the last name. Parts of the name also exists independently as a first name Eun, and a first name Sook.