Surname Гаманн (Hamann 
, Deitert 
, Гаманн 
) , all over the world, is a common cognomen. The surname Гаманн is habitual in Germany, where it is quite a common surname, Denmark, and Macao, where it is quite a rare surname. Not in comparison with a country's population, the name is most common in Germany, the United States, and France. Much less frequently, Гаманн is the forename as well as the last name.