Rex vs Cason

Baby Name Comparison — 2026

Rex

Boy #793 Most Popular 1 Syllable

"king"

Origin: Latin

English Latin American

✓ All Clear

Boy #859 Most Popular 2 Syllables

"son of the marsh dwellers"

Origin: English/Scottish (via Carson)

American English

✓ All Clear

Rex Rank #793

Cason Rank #859

Rex is more popular, ranked #793 vs #859 for Cason.

Is Rex or Cason more popular?

Rex is more popular, ranked #793 compared to Cason at #859 in the United States.

What do Rex and Cason mean?

Rex means "king" (Latin origin). Cason means "son of the marsh dwellers" (English/Scottish (via Carson) origin).

Are Rex and Cason boy or girl names?

Rex is primarily a boy name. Cason is primarily a boy name.