Sullivan vs Kayson

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 #291 Most Popular 2 Syllables

"rejoice, healer"

Origin: American/Persian

American

✓ All Clear

Sullivan Rank #340

Kayson Rank #291

Kayson is more popular, ranked #291 vs #340 for Sullivan.

Is Sullivan or Kayson more popular?

Kayson is more popular, ranked #291 compared to Sullivan at #340 in the United States.

What do Sullivan and Kayson mean?

Sullivan means "descendant of the dark one" (Irish Gaelic origin). Kayson means "rejoice, healer" (American/Persian origin).

Are Sullivan and Kayson boy or girl names?

Sullivan is primarily a boy name. Kayson is primarily a boy name.