Globally, Wansen (万森 
, Wansen 
, หวันเส็น ) is quite a rare masculine first name. The first name Wansen is habitual in China, where it is a rare male name, Indonesia, where it is a very rare masculine name, and India, where it is an extremely rare dominantly boy's, but seldom girly name. Much less frequently, Wansen is the last name as well as the forename.