Family name Yagen (亚根 
, Yagen 
, יגן 
) , all around the world, is a rare last name. The cognomen Yagen is characteristic of Israel, where it is quite a rare surname, Japan, where it is a very rare surname, and Philippines. Not in comparison with a country's population, it is commonest in China, Israel, and the United States. More frequently, Yagen is the forename as well as the last name.