William vs Isaac

Baby Name Comparison — 2026

William

Boy #10 Most Popular 3 Syllables

"resolute protector, strong-willed guardian"

Origin: Germanic

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Boy #40 Most Popular 3 Syllables

"He will laugh; laughter"

Origin: Hebrew

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William Rank #10

Isaac Rank #40

William is more popular, ranked #10 vs #40 for Isaac.

Is William or Isaac more popular?

William is more popular, ranked #10 compared to Isaac at #40 in the United States.

What do William and Isaac mean?

William means "resolute protector, strong-willed guardian" (Germanic origin). Isaac means "He will laugh; laughter" (Hebrew origin).

Are William and Isaac boy or girl names?

William is primarily a boy name. Isaac is primarily a boy name.