Cognomen 洛普 (Loup 
, 洛普 
, Roeper 
) , around the globe, is quite a common family name. The cognomen 洛普 is habitual in Switzerland, where it is quite a rare surname, France, and Algeria. Measured by absolute frequency, it most frequently occurs in France, Algeria, and Germany. Much less frequently, 洛普 is the forename as well as the last name.