Isaac vs Knox

Baby Name Comparison — 2026

Isaac

Boy #40 Most Popular 3 Syllables

"He will laugh; laughter"

Origin: Hebrew

English Jewish Spanish French

✓ All Clear

Boy #209 Most Popular 1 Syllable

"round hill"

Origin: Old English/Scottish

American Scottish English

✓ All Clear

Isaac Rank #40

Knox Rank #209

Isaac is more popular, ranked #40 vs #209 for Knox.

Is Isaac or Knox more popular?

Isaac is more popular, ranked #40 compared to Knox at #209 in the United States.

What do Isaac and Knox mean?

Isaac means "He will laugh; laughter" (Hebrew origin). Knox means "round hill" (Old English/Scottish origin).

Are Isaac and Knox boy or girl names?

Isaac is primarily a boy name. Knox is primarily a boy name.