Rex vs Kylen

Baby Name Comparison — 2026

Rex

Boy #793 Most Popular 1 Syllable

"king"

Origin: Latin

English Latin American

✓ All Clear

Boy #922 Most Popular 2 Syllables

"narrow, a strait"

Origin: Scottish Gaelic

Scottish Irish American

✓ All Clear

Rex Rank #793

Kylen Rank #922

Rex is more popular, ranked #793 vs #922 for Kylen.

Is Rex or Kylen more popular?

Rex is more popular, ranked #793 compared to Kylen at #922 in the United States.

What do Rex and Kylen mean?

Rex means "king" (Latin origin). Kylen means "narrow, a strait" (Scottish Gaelic origin).

Are Rex and Kylen boy or girl names?

Rex is primarily a boy name. Kylen is primarily a boy name.