Last name Крэн (Kren 
, Крэн 
) , in the entire world, is quite a rare cognomen. The surname Крэн is habitual in Slovenia, where it is quite a common surname, Czechia, where it is quite a rare surname, and Austria. In absolute terms, this name is the most popular in Indonesia, Czechia, and the United States. Very seldom, Крэн is the forename as well as the last name.