Family name Yoon-Ah (윤아 
, Yoon-Ah 
) , around the globe, is an extremely rare surname. The cognomen Yoon-Ah is characteristic of Spain, where it is an extremely rare surname, and the United States. Much more prevalently, Yoon-Ah is the forename as well as the last name. Parts of the name also exists independently as a first name Yoon, and a first name Ah.