Last name 纳普 (Knap 
, Knapp , 纳普) , in all the world, is a common surname. The cognomen 纳普 is habitual in Western Europe, particularly Austria, where it is quite a common surname, Liechtenstein, and Germany (explore the name in all countries). In absolute terms, it is commonest in the United States, Germany, and Poland. Much less frequently, 纳普 is the forename as well as the last name.