Knox vs Leo

Baby Name Comparison — 2026

Leo

Boy #24 Most Popular 2 Syllables

Meaning

"lion-hearted, brave"

Origin: Latin

Cultural Roots

English Italian German French American Spanish

Quick Stats

Popularity Rank
#24
Total SSA Count
7,793
Syllables
2
Formality
Casual

Playground Safety Score

✓ All Clear
Full profile for Leo →

Popularity Comparison

Knox Rank #209
Leo Rank #24

Leo is more popular, ranked #24 vs #209 for Knox.

Popularity Over Time

Historical US popularity rank — lower number means more popular.

Middle Name Pairings

Knox ___

  • Knox James
  • Knox Oliver
  • Knox William
  • Knox Henry
  • Knox Alexander
  • Knox Reid

Leo ___

  • Leo James
  • Leo Thomas
  • Leo Alexander
  • Leo Cole
  • Leo Grey
  • Leo Xavier

Sibling Name Ideas

Names that pair well as siblings.

If you choose Knox

Ryder Lennox Jagger Saylor Piper

If you choose Leo

Luna Isla Mia Oscar Violet

Which Name Fits Your Family?

Answer 3 quick questions and we'll help you decide.

1. Which style feels more like your family?

Frequently Asked Questions

Is Knox or Leo more popular?

Leo is more popular, ranked #24 compared to Knox at #209 in the United States.

What do Knox and Leo mean?

Knox means "round hill" (Old English/Scottish origin). Leo means "lion-hearted, brave" (Latin origin).

Are Knox and Leo boy or girl names?

Knox is primarily a boy name. Leo is primarily a boy name.

More Comparisons

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← Full profile: Knox ← Full profile: Leo Browse all baby names