Family name Kiena (Къна 
, Kiena 
) , in all the world, is quite a rare last name. The last name Kiena is characteristic of Bulgaria, where it is quite a common surname, Latvia, where it is quite a rare surname, and Malaysia, where it is a very rare surname. In absolute terms, it is the most numerous in Bulgaria, India, and Indonesia. Likewise, Kiena is the forename as well as the last name.