Cognomen Келан (Kielan 
, Kellan 
, Келан 
) , in all the world, is quite a rare family name. The family name Келан is characteristic of Poland, where it is quite a rare surname, Finland, where it is a rare surname, and Iraq. In absolute terms, the name is most common in Poland, the United States, and Iraq. More frequently, Келан is the forename as well as the last name.