In the world, Келс (Kels 
, Келс 
, Selsus 
) is a rare epicene forename. The first name Келс is habitual in Botswana, where it is quite a rare female name, Kazakhstan, where it is a rare masculine name, and Australia, where it is a very rare girly name. Measured by absolute frequency, it is commonest in Botswana, the United States, and Kazakhstan. Likewise, Келс is the last name as well as the forename.