Rex vs Kyro

Baby Name Comparison — 2026

Rex

Boy #793 Most Popular 1 Syllable

"king"

Origin: Latin

English Latin American

✓ All Clear

Boy #644 Most Popular 2 Syllables

"sun, lord"

Origin: Persian/Greek (Kyros)

English American

✓ All Clear

Rex Rank #793

Kyro Rank #644

Kyro is more popular, ranked #644 vs #793 for Rex.

Is Rex or Kyro more popular?

Kyro is more popular, ranked #644 compared to Rex at #793 in the United States.

What do Rex and Kyro mean?

Rex means "king" (Latin origin). Kyro means "sun, lord" (Persian/Greek (Kyros) origin).

Are Rex and Kyro boy or girl names?

Rex is primarily a boy name. Kyro is primarily a boy name.