Cognomen Яхман (Jachmann 
, Яхман 
) , across the world, is quite a rare surname. The last name Яхман is habitual in Germany, where it is quite a rare surname, Australia, where it is a rare surname, and Austria. Not in comparison with a country's population, this name is the most popular in Germany, Australia, and the United States. Very seldom, Яхман is the forename as well as the last name.