Kai vs Lucas

Baby Name Comparison — 2026

Kai

Boy #76 Most Popular 1 Syllable

"sea"

Origin: Hawaiian

Hawaiian Scandinavian Japanese American Chinese

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Boy #9 Most Popular 2 Syllables

"from Lucania"

Origin: Latin

English Spanish Portuguese

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Kai Rank #76

Lucas Rank #9

Lucas is more popular, ranked #9 vs #76 for Kai.

Is Kai or Lucas more popular?

Lucas is more popular, ranked #9 compared to Kai at #76 in the United States.

What do Kai and Lucas mean?

Kai means "sea" (Hawaiian origin). Lucas means "from Lucania" (Latin origin).

Are Kai and Lucas boy or girl names?

Kai is primarily a boy name. Lucas is primarily a boy name.