Surname Генн (Genn 
, Guenn 
, Генн 
) , all over the world, is quite a rare cognomen. The cognomen Генн is characteristic of Australia, where it is a rare surname, Germany, and New Zealand. Measured by absolute frequency, this name is the most popular in the United States, Germany, and Australia. Very seldom, Генн is the forename as well as the last name.