Rex vs Marcellus

Baby Name Comparison — 2026

Rex

Boy #793 Most Popular 1 Syllable

"king"

Origin: Latin

English Latin American

✓ All Clear

Boy #951 Most Popular 3 Syllables

"little warrior, young Mars"

Origin: Latin

English French Italian Roman German

✓ All Clear

Rex Rank #793

Marcellus Rank #951

Rex is more popular, ranked #793 vs #951 for Marcellus.

Is Rex or Marcellus more popular?

Rex is more popular, ranked #793 compared to Marcellus at #951 in the United States.

What do Rex and Marcellus mean?

Rex means "king" (Latin origin). Marcellus means "little warrior, young Mars" (Latin origin).

Are Rex and Marcellus boy or girl names?

Rex is primarily a boy name. Marcellus is primarily a boy name.