Family name 凯默 (Kemmer 
, 凯默 
) , in the world, is quite a common surname. The surname 凯默 is habitual in Western Europe, particularly Luxembourg, where it is quite a rare surname, Germany, and Austria. In absolute terms, it most frequently occurs in Germany, the United States, and Brazil. Very seldom, 凯默 is the forename as well as the last name.