Kai vs Thomas

Baby Name Comparison — 2026

Kai

Boy #76 Most Popular 1 Syllable

"sea"

Origin: Hawaiian

Hawaiian Scandinavian Japanese American Chinese

✓ All Clear

Boy #39 Most Popular 2 Syllables

"Twin"

Origin: Aramaic

English French German Spanish Irish

✓ All Clear

Kai Rank #76

Thomas Rank #39

Thomas is more popular, ranked #39 vs #76 for Kai.

Is Kai or Thomas more popular?

Thomas is more popular, ranked #39 compared to Kai at #76 in the United States.

What do Kai and Thomas mean?

Kai means "sea" (Hawaiian origin). Thomas means "Twin" (Aramaic origin).

Are Kai and Thomas boy or girl names?

Kai is primarily a boy name. Thomas is primarily a boy name.