Surname 瑟夫 (瑟夫 
, Cerf 
) , all over the world, is quite a rare last name. The family name 瑟夫 is habitual in Western Europe, particularly Luxembourg, where it is quite a rare surname, France, and Switzerland. Measured by absolute frequency, it is commonest in France, the United States, and Switzerland. Much less frequently, 瑟夫 is the forename as well as the last name.