Sullivan vs Aidan

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 #312 Most Popular 2 Syllables

Irish Scottish English American

✓ All Clear

Sullivan Rank #340

Aidan Rank #312

Aidan is more popular, ranked #312 vs #340 for Sullivan.

Is Sullivan or Aidan more popular?

Aidan is more popular, ranked #312 compared to Sullivan at #340 in the United States.

What do Sullivan and Aidan mean?

Sullivan means "descendant of the dark one" (Irish Gaelic origin).

Are Sullivan and Aidan boy or girl names?

Sullivan is primarily a boy name. Aidan is primarily a boy name.