Jack vs Leonardo

Baby Name Comparison — 2026

Jack

Boy #15 Most Popular 1 Syllable

"supplanter"

Origin: Hebrew

English Irish American Australian

✓ All Clear

Boy #84 Most Popular 4 Syllables

"brave as a lion"

Origin: Italian from Germanic (Leonard)

Italian Spanish Portuguese American

✓ All Clear

Jack Rank #15

Leonardo Rank #84

Jack is more popular, ranked #15 vs #84 for Leonardo.

Is Jack or Leonardo more popular?

Jack is more popular, ranked #15 compared to Leonardo at #84 in the United States.

What do Jack and Leonardo mean?

Jack means "supplanter" (Hebrew origin). Leonardo means "brave as a lion" (Italian from Germanic (Leonard) origin).

Are Jack and Leonardo boy or girl names?

Jack is primarily a boy name. Leonardo is primarily a boy name.