William vs Leo

Baby Name Comparison — 2026

William

Boy #10 Most Popular 3 Syllables

"resolute protector, strong-willed guardian"

Origin: Germanic

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Boy #24 Most Popular 2 Syllables

"lion-hearted, brave"

Origin: Latin

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William Rank #10

Leo Rank #24

William is more popular, ranked #10 vs #24 for Leo.

Is William or Leo more popular?

William is more popular, ranked #10 compared to Leo at #24 in the United States.

What do William and Leo mean?

William means "resolute protector, strong-willed guardian" (Germanic origin). Leo means "lion-hearted, brave" (Latin origin).

Are William and Leo boy or girl names?

William is primarily a boy name. Leo is primarily a boy name.