Surname Крел (Krel 
, Крел 
, Krelj ) , in all the world, is a rare cognomen. The family name Крел is habitual in Slovenia, where it is quite a rare surname, Estonia, where it is a rare surname, and Bulgaria. Not in comparison with a country's population, it most frequently occurs in Slovenia, Germany, and the United States. Likewise, Крел is the forename as well as the last name.