Kai vs Riley

Baby Name Comparison — 2026

Kai

Boy #76 Most Popular 1 Syllable

"sea"

Origin: Hawaiian

Hawaiian Scandinavian Japanese American Chinese

✓ All Clear

Boy #229 Most Popular 2 Syllables

"courageous, valiant"

Origin: Irish

Irish English American

✓ All Clear

Kai Rank #76

Riley Rank #229

Kai is more popular, ranked #76 vs #229 for Riley.

Is Kai or Riley more popular?

Kai is more popular, ranked #76 compared to Riley at #229 in the United States.

What do Kai and Riley mean?

Kai means "sea" (Hawaiian origin). Riley means "courageous, valiant" (Irish origin).

Are Kai and Riley boy or girl names?

Kai is primarily a boy name. Riley is primarily a boy name.