Sullivan vs Calahan

Baby Name Comparison — 2026

Sullivan

Boy #340 Most Popular 3 Syllables

"descendant of the dark one"

Origin: Irish Gaelic

Irish American English

✓ All Clear

Boy #6,281 Most Popular 3 Syllables

"lover of churches, church devotee"

Origin: Old Irish ceallach

Irish Irish American American

✓ All Clear

Sullivan Rank #340

Calahan Rank #6,281

Sullivan is more popular, ranked #340 vs #6281 for Calahan.

Is Sullivan or Calahan more popular?

Sullivan is more popular, ranked #340 compared to Calahan at #6281 in the United States.

What do Sullivan and Calahan mean?

Sullivan means "descendant of the dark one" (Irish Gaelic origin). Calahan means "lover of churches, church devotee" (Old Irish ceallach origin).

Are Sullivan and Calahan boy or girl names?

Sullivan is primarily a boy name. Calahan is primarily a boy name.