Cal vs Rex

Baby Name Comparison — 2026

Cal

Boy #671 Most Popular 1 Syllable

"bald (short for Calvin from Latin Calvinus)"

Origin: Latin

American English Scottish

✓ All Clear

Boy #793 Most Popular 1 Syllable

"king"

Origin: Latin

English Latin American

✓ All Clear

Cal Rank #671

Rex Rank #793

Cal is more popular, ranked #671 vs #793 for Rex.

Is Cal or Rex more popular?

Cal is more popular, ranked #671 compared to Rex at #793 in the United States.

What do Cal and Rex mean?

Cal means "bald (short for Calvin from Latin Calvinus)" (Latin origin). Rex means "king" (Latin origin).

Are Cal and Rex boy or girl names?

Cal is primarily a boy name. Rex is primarily a boy name.