Khai vs Rex

Baby Name Comparison — 2026

Khai

Boy #949 Most Popular 1 Syllable

"triumphant, victorious"

Origin: Vietnamese

Vietnamese American Arabic

✓ All Clear

Boy #793 Most Popular 1 Syllable

"king"

Origin: Latin

English Latin American

✓ All Clear

Khai Rank #949

Rex Rank #793

Rex is more popular, ranked #793 vs #949 for Khai.

Is Khai or Rex more popular?

Rex is more popular, ranked #793 compared to Khai at #949 in the United States.

What do Khai and Rex mean?

Khai means "triumphant, victorious" (Vietnamese origin). Rex means "king" (Latin origin).

Are Khai and Rex boy or girl names?

Khai is primarily a boy name. Rex is primarily a boy name.