Cognomen ديم (Diem 
, Deem 
, Demme 
) , around the globe, is a common surname. The cognomen ديم is habitual in Switzerland, where it is quite a common surname, Austria, and Vietnam, where it is quite a rare surname. Measured by absolute frequency, the name is most common in the United States, Vietnam, and Germany. Likewise, ديم is the forename as well as the last name.