All around the world, Киффер (Kieffer 
, Киффер) is a rare principally masculine, but scarcely feminine first name. The forename Киффер is habitual in Luxembourg, where it is quite a rare female name, the Democratic Republic of the Congo, where it is a rare masculine name, and Peru, where it is a very rare masculine name. In absolute terms, this name is the most popular in the Democratic Republic of the Congo, the United States, and France. Much more prevalently, Киффер is the last name as well as the forename.