Declan vs Kai

Baby Name Comparison — 2026

Declan

Boy #131 Most Popular 2 Syllables

"man of prayer"

Origin: Irish Gaelic

Irish English American

✓ All Clear

Boy #76 Most Popular 1 Syllable

"sea"

Origin: Hawaiian

Hawaiian Scandinavian Japanese American Chinese

✓ All Clear

Declan Rank #131

Kai Rank #76

Kai is more popular, ranked #76 vs #131 for Declan.

Is Declan or Kai more popular?

Kai is more popular, ranked #76 compared to Declan at #131 in the United States.

What do Declan and Kai mean?

Declan means "man of prayer" (Irish Gaelic origin). Kai means "sea" (Hawaiian origin).

Are Declan and Kai boy or girl names?

Declan is primarily a boy name. Kai is primarily a boy name.