Kellen vs Thaddeus

Baby Name Comparison — 2026

Kellen

Boy #1,031 Most Popular 2 Syllables

"slender, narrow"

Origin: Irish Gaelic 'caol'

Irish American German

✓ All Clear

Boy #850 Most Popular 3 Syllables

"courageous heart"

Origin: Aramaic

English Polish American Catholic

✓ All Clear

Kellen Rank #1,031

Thaddeus Rank #850

Thaddeus is more popular, ranked #850 vs #1031 for Kellen.

Is Kellen or Thaddeus more popular?

Thaddeus is more popular, ranked #850 compared to Kellen at #1031 in the United States.

What do Kellen and Thaddeus mean?

Kellen means "slender, narrow" (Irish Gaelic 'caol' origin). Thaddeus means "courageous heart" (Aramaic origin).

Are Kellen and Thaddeus boy or girl names?

Kellen is primarily a boy name. Thaddeus is primarily a boy name.