Cognomen Цапп (Czapp 
, Zapp 
, Capp 
) , across the world, is quite a common last name. The family name Цапп is characteristic of Germany, where it is quite a rare surname, Australia, and Qatar. Not in comparison with a country's population, it is the most numerous in Germany, the United States, and the United Kingdom. Much less frequently, Цапп is the forename as well as the last name.