Cognomen Келен (Kelen 
, Келен 
) , globally, is quite a rare last name. The surname Келен is habitual in Marshall Islands, where it is quite a common surname, Belgium, where it is quite a rare surname, and Hungary. Not in comparison with a country's population, it is commonest in Indonesia, Turkey, and Belgium. More prevalently, Келен is the forename as well as the last name.