Sullivan vs Dean

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 #142 Most Popular 1 Syllable

"church official overseeing ten"

Origin: Latin decanus

English American

15 High Risk

{:type=>:rhyme, :severity=>:medium, :message=>"'Dean' rhymes with 'mean'"}

Sullivan Rank #340

Dean Rank #142

Dean is more popular, ranked #142 vs #340 for Sullivan.

Is Sullivan or Dean more popular?

Dean is more popular, ranked #142 compared to Sullivan at #340 in the United States.

What do Sullivan and Dean mean?

Sullivan means "descendant of the dark one" (Irish Gaelic origin). Dean means "church official overseeing ten" (Latin decanus origin).

Are Sullivan and Dean boy or girl names?

Sullivan is primarily a boy name. Dean is primarily a boy name.