Rex vs Rocky

Baby Name Comparison — 2026

Rex

Boy #793 Most Popular 1 Syllable

"king"

Origin: Latin

English Latin American

✓ All Clear

Boy #658 Most Popular 2 Syllables

"from the rocks"

Origin: English

American English Italian American

✓ All Clear

Rex Rank #793

Rocky Rank #658

Rocky is more popular, ranked #658 vs #793 for Rex.

Is Rex or Rocky more popular?

Rocky is more popular, ranked #658 compared to Rex at #793 in the United States.

What do Rex and Rocky mean?

Rex means "king" (Latin origin). Rocky means "from the rocks" (English origin).

Are Rex and Rocky boy or girl names?

Rex is primarily a boy name. Rocky is primarily a boy name.