In Gaelic, the name Kellen means - Slender; fair. Form of Caelan.. Other origins for the name Kellen include - Gaelic, Irish.The name Kellen is a unisex name and can be used for a boy or girl name (male or female).
Gaelic Name Meaning - Slender; fair. Form of Caelan.
Origin - Gaelic
Alternate Origins - Irish