US Popularity Rank: 1849

Origin: Modern

Meaning: Little slender one; Swampy area

This modern gender-neutral name has a cool vibe and is unique enough for those one-of-a-kind tots. A great alternative to classic names such as Caolán, Ellen, and Kelly, Kellen is a welcome change. With Irish origins, Kellen means “little slender one” and comes with a bunch of nicknames that are both masculine and feminine sounding. If its German roots are to be believed, baby Kellen could be a major Shrek fan, as it signifies “swampy area.” Kellen was possibly popularized by Twilight actor Kellen Lutz, which is why it peaked for baby boys in the early 2010s.