Alex vs Kai

Baby Name Comparison — 2026

Alex

Boy #205 Most Popular 2 Syllables

"defender of men"

Origin: Greek

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Boy #76 Most Popular 1 Syllable

"sea"

Origin: Hawaiian

Hawaiian Scandinavian Japanese American Chinese

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Alex Rank #205

Kai Rank #76

Kai is more popular, ranked #76 vs #205 for Alex.

Is Alex or Kai more popular?

Kai is more popular, ranked #76 compared to Alex at #205 in the United States.

What do Alex and Kai mean?

Alex means "defender of men" (Greek origin). Kai means "sea" (Hawaiian origin).

Are Alex and Kai boy or girl names?

Alex is primarily a boy name. Kai is primarily a boy name.