Kai vs Otto

Baby Name Comparison — 2026

Kai

Boy #76 Most Popular 1 Syllable

"sea"

Origin: Hawaiian

Hawaiian Scandinavian Japanese American Chinese

✓ All Clear

Boy #274 Most Popular 2 Syllables

"wealth, fortune, prosperity"

Origin: Old High German

German Scandinavian Italian English

✓ All Clear

Kai Rank #76

Otto Rank #274

Kai is more popular, ranked #76 vs #274 for Otto.

Is Kai or Otto more popular?

Kai is more popular, ranked #76 compared to Otto at #274 in the United States.

What do Kai and Otto mean?

Kai means "sea" (Hawaiian origin). Otto means "wealth, fortune, prosperity" (Old High German origin).

Are Kai and Otto boy or girl names?

Kai is primarily a boy name. Otto is primarily a boy name.