Throughout the world, เคลส์ (Khen 
, เคลส์ 
) is quite a rare gender-neutral forename. The forename เคลส์ is habitual in the Democratic Republic of the Congo, where it is quite a rare dominantly boy's, but uncommonly girly name, Qatar, where it is a rare boy's name, and United Arab Emirates, where it is a rare gender-neutral name. Measured by absolute frequency, it most frequently occurs in the Democratic Republic of the Congo, India, and Philippines. Also, เคลส์ is the last name as well as the forename.