Worldwide, Reysen (Reisen 
, Reysen 
) is a rare dominantly boy's, but seldom girly forename. The first name Reysen is characteristic of Philippines, where it is a very rare epicene name, Indonesia, where it is a very rare masculine name, and China, where it is an extremely rare masculine name. Also, Reysen is the last name as well as the forename.