Kylen vs Rex

Baby Name Comparison — 2026

Kylen

Boy #922 Most Popular 2 Syllables

"narrow, a strait"

Origin: Scottish Gaelic

Scottish Irish American

✓ All Clear

Boy #793 Most Popular 1 Syllable

"king"

Origin: Latin

English Latin American

✓ All Clear

Kylen Rank #922

Rex Rank #793

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

Is Kylen or Rex more popular?

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

What do Kylen and Rex mean?

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

Are Kylen and Rex boy or girl names?

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