Kai vs Aiden

Baby Name Comparison — 2026

Kai

Boy #76 Most Popular 1 Syllable

"sea"

Origin: Hawaiian

Hawaiian Scandinavian Japanese American Chinese

✓ All Clear

Boy #47 Most Popular 2 Syllables

"Little fire; born of fire"

Origin: Irish Gaelic

Irish English American

✓ All Clear

Kai Rank #76

Aiden Rank #47

Aiden is more popular, ranked #47 vs #76 for Kai.

Is Kai or Aiden more popular?

Aiden is more popular, ranked #47 compared to Kai at #76 in the United States.

What do Kai and Aiden mean?

Kai means "sea" (Hawaiian origin). Aiden means "Little fire; born of fire" (Irish Gaelic origin).

Are Kai and Aiden boy or girl names?

Kai is primarily a boy name. Aiden is primarily a boy name.