Eiden vs Rex

Baby Name Comparison — 2026

Eiden

Boy #807 Most Popular 2 Syllables

"fire (from the sun god Aodh)"

Origin: Irish Gaelic

American Irish

✓ All Clear

Boy #793 Most Popular 1 Syllable

"king"

Origin: Latin

English Latin American

✓ All Clear

Eiden Rank #807

Rex Rank #793

Rex is more popular, ranked #793 vs #807 for Eiden.

Is Eiden or Rex more popular?

Rex is more popular, ranked #793 compared to Eiden at #807 in the United States.

What do Eiden and Rex mean?

Eiden means "fire (from the sun god Aodh)" (Irish Gaelic origin). Rex means "king" (Latin origin).

Are Eiden and Rex boy or girl names?

Eiden is primarily a boy name. Rex is primarily a boy name.