Family name 吉泽 (吉泽 
, Giese 
) , around the globe, is a common last name. The cognomen 吉泽 is characteristic of Germany, where it is quite a common surname, Denmark, where it is quite a rare surname, and the United States. In absolute terms, this name is the most popular in Germany, the United States, and Brazil. Much less frequently, 吉泽 is the forename as well as the last name.