Surname Vreni (Vreni 
, فريني 
, Френи) , all around the world, is quite a rare family name. The surname Vreni is habitual in Liechtenstein, where it is quite a common surname, Sudan, where it is quite a rare surname, and Switzerland, where it is a rare surname. In absolute terms, this name is the most popular in Sudan, the United States, and Switzerland. Likewise, Vreni is the forename as well as the last name.