Isaac vs Leo

Baby Name Comparison — 2026

Isaac

Boy #40 Most Popular 3 Syllables

"He will laugh; laughter"

Origin: Hebrew

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Boy #24 Most Popular 2 Syllables

"lion-hearted, brave"

Origin: Latin

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Isaac Rank #40

Leo Rank #24

Leo is more popular, ranked #24 vs #40 for Isaac.

Is Isaac or Leo more popular?

Leo is more popular, ranked #24 compared to Isaac at #40 in the United States.

What do Isaac and Leo mean?

Isaac means "He will laugh; laughter" (Hebrew origin). Leo means "lion-hearted, brave" (Latin origin).

Are Isaac and Leo boy or girl names?

Isaac is primarily a boy name. Leo is primarily a boy name.