Lucas vs Kai

Baby Name Comparison — 2026

Lucas

Boy #9 Most Popular 2 Syllables

"from Lucania"

Origin: Latin

English Spanish Portuguese

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Boy #76 Most Popular 1 Syllable

"sea"

Origin: Hawaiian

Hawaiian Scandinavian Japanese American Chinese

✓ All Clear

Lucas Rank #9

Kai Rank #76

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

Is Lucas or Kai more popular?

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

What do Lucas and Kai mean?

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

Are Lucas and Kai boy or girl names?

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