Cognomen Baisen (柏森 
, Baisen 
) , all around the world, is quite a rare last name. The surname Baisen is characteristic of China, where it is a very rare surname, Argentina, where it is an extremely rare surname, and Nigeria. In absolute terms, this name is the most popular in China, India, and Nigeria. More prevalently, Baisen is the forename as well as the last name.