Surname Yongen (永恩 
, 咏恩 , Yongen 
) , in all the world, is quite a rare last name. The family name Yongen is habitual in Bulgaria, where it is a rare surname, China, and Malaysia, where it is a very rare surname. Not in comparison with a country's population, it is commonest in China, Indonesia, and Thailand. More frequently, Yongen is the forename as well as the last name.