Family name 雷森 (Risen 
, Raison 
, Renson 
) , globally, is a common last name. The last name 雷森 is characteristic of Belgium, where it is quite a common surname, Israel, where it is quite a rare surname, and Luxembourg. In absolute terms, it is the most numerous in France, Belgium, and Japan. Likewise, 雷森 is the forename as well as the last name.