Family name 加森 (加森 
, Gassen 
, Garson 
) , throughout the world, is a common cognomen. The cognomen 加森 is habitual in Mauritius, where it is quite a rare surname, New Zealand, and the United Kingdom. Measured by absolute frequency, this name is the most popular in the United States, Brazil, and Germany. Much less frequently, 加森 is the forename as well as the last name.