Kellen vs Billy

Baby Name Comparison — 2026

Kellen

Boy #1,031 Most Popular 2 Syllables

"slender, narrow"

Origin: Irish Gaelic 'caol'

Irish American German

✓ All Clear

Boy #1,051 Most Popular 2 Syllables

"resolute protector"

Origin: Old German via Norman French

English American Australian Irish

✓ All Clear

Kellen Rank #1,031

Billy Rank #1,051

Kellen is more popular, ranked #1031 vs #1051 for Billy.

Is Kellen or Billy more popular?

Kellen is more popular, ranked #1031 compared to Billy at #1051 in the United States.

What do Kellen and Billy mean?

Kellen means "slender, narrow" (Irish Gaelic 'caol' origin). Billy means "resolute protector" (Old German via Norman French origin).

Are Kellen and Billy boy or girl names?

Kellen is primarily a boy name. Billy is primarily a boy name.