Kaius vs Kolby

Baby Name Comparison — 2026

Kaius

Boy #1,137 Most Popular 3 Syllables

Meaning

"rejoice, be glad"

Origin: Latin

Cultural Roots

Latin Scandinavian Finnish

Quick Stats

Popularity Rank
#1,137
Total SSA Count
186
Syllables
3
Formality
Moderate
Nicknames
Kai

Playground Safety Score

✓ All Clear
Full profile for Kaius →

Kolby

Boy #1,272 Most Popular 2 Syllables

Meaning

"dark settlement, coal town"

Origin: Old Norse

Cultural Roots

American Scandinavian English

Quick Stats

Popularity Rank
#1,272
Total SSA Count
155
Syllables
2
Formality
Casual
Nicknames
Kol

Playground Safety Score

✓ All Clear
Full profile for Kolby →

Popularity Comparison

Kaius Rank #1,137
Kolby Rank #1,272

Kaius is more popular, ranked #1137 vs #1272 for Kolby.

Popularity Over Time

Historical US popularity rank — lower number means more popular.

Middle Name Pairings

Kaius ___

  • Kaius Alexander
  • Kaius James
  • Kaius Elliot
  • Kaius Arthur
  • Kaius Reid
  • Kaius Finn

Kolby ___

  • Kolby James
  • Kolby Ray
  • Kolby Dean
  • Kolby Lee
  • Kolby Wayne
  • Kolby Scott

Sibling Name Ideas

Names that pair well as siblings.

If you choose Kaius

Callum Leona Aurora Finn Cassius

If you choose Kolby

Kollyns Kolsen Hadley Parker Presley

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 Kaius or Kolby more popular?

Kaius is more popular, ranked #1137 compared to Kolby at #1272 in the United States.

What do Kaius and Kolby mean?

Kaius means "rejoice, be glad" (Latin origin). Kolby means "dark settlement, coal town" (Old Norse origin).

Are Kaius and Kolby boy or girl names?

Kaius is primarily a boy name. Kolby is primarily a boy name.

More Comparisons

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← Full profile: Kaius ← Full profile: Kolby Browse all baby names