Kai vs Simon

Baby Name Comparison — 2026

Simon

Boy #251 Most Popular 2 Syllables

Meaning

"he has heard, God has heard"

Origin: Hebrew

Cultural Roots

English French German Scandinavian Jewish

Quick Stats

Popularity Rank
#251
Total SSA Count
1,402
Syllables
2
Formality
Moderate
Nicknames
Si, Sim

Playground Safety Score

✓ All Clear
Full profile for Simon →

Popularity Comparison

Kai Rank #76
Simon Rank #251

Kai is more popular, ranked #76 vs #251 for Simon.

Popularity Over Time

Historical US popularity rank — lower number means more popular.

Middle Name Pairings

Kai ___

  • Kai James
  • Kai Alexander
  • Kai Michael
  • Kai Robert
  • Kai William
  • Kai Thomas

Simon ___

  • Simon James
  • Simon Thomas
  • Simon George
  • Simon Peter
  • Simon Alexander
  • Simon Henry

Sibling Name Ideas

Names that pair well as siblings.

If you choose Kai

Zara Nova Mila Leo Finn

If you choose Simon

James Oliver Sebastian Helena Miriam

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 Kai or Simon more popular?

Kai is more popular, ranked #76 compared to Simon at #251 in the United States.

What do Kai and Simon mean?

Kai means "sea" (Hawaiian origin). Simon means "he has heard, God has heard" (Hebrew origin).

Are Kai and Simon boy or girl names?

Kai is primarily a boy name. Simon is primarily a boy name.

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← Full profile: Kai ← Full profile: Simon Browse all baby names