Cognomen Хейдеман (Heydemann 
, Хейдеман 
) , all over the world, is a rare last name. The cognomen Хейдеман is habitual in Germany, where it is a rare surname, Finland, and Netherlands, where it is a very rare surname. Not in comparison with a country's population, this name is the most popular in Germany, France, and the United States. Very seldom, Хейдеман is the forename as well as the last name.