Kai vs Jett

Baby Name Comparison — 2026

Kai

Boy #76 Most Popular 1 Syllable

"sea"

Origin: Hawaiian

Hawaiian Scandinavian Japanese American Chinese

✓ All Clear

Boy #161 Most Popular 1 Syllable

"black gemstone; jet"

Origin: English

American Australian English

✓ All Clear

Kai Rank #76

Jett Rank #161

Kai is more popular, ranked #76 vs #161 for Jett.

Is Kai or Jett more popular?

Kai is more popular, ranked #76 compared to Jett at #161 in the United States.

What do Kai and Jett mean?

Kai means "sea" (Hawaiian origin). Jett means "black gemstone; jet" (English origin).

Are Kai and Jett boy or girl names?

Kai is primarily a boy name. Jett is primarily a boy name.