Kai vs Justin

Baby Name Comparison — 2026

Kai

Boy #76 Most Popular 1 Syllable

"sea"

Origin: Hawaiian

Hawaiian Scandinavian Japanese American Chinese

✓ All Clear

Boy #199 Most Popular 2 Syllables

"just, righteous"

Origin: Latin

English American French Scandinavian

✓ All Clear

Kai Rank #76

Justin Rank #199

Kai is more popular, ranked #76 vs #199 for Justin.

Is Kai or Justin more popular?

Kai is more popular, ranked #76 compared to Justin at #199 in the United States.

What do Kai and Justin mean?

Kai means "sea" (Hawaiian origin). Justin means "just, righteous" (Latin origin).

Are Kai and Justin boy or girl names?

Kai is primarily a boy name. Justin is primarily a boy name.