Rex vs Eiden

Baby Name Comparison — 2026

Rex

Boy #793 Most Popular 1 Syllable

"king"

Origin: Latin

English Latin American

✓ All Clear

Boy #807 Most Popular 2 Syllables

"fire (from the sun god Aodh)"

Origin: Irish Gaelic

American Irish

✓ All Clear

Rex Rank #793

Eiden Rank #807

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

Is Rex or Eiden more popular?

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

What do Rex and Eiden mean?

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

Are Rex and Eiden boy or girl names?

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