Kaius vs Ren

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 →

Ren

Boy #1,147 Most Popular 1 Syllable

Meaning

"lotus, water lily"

Origin: Japanese

Cultural Roots

Japanese Chinese Scandinavian

Quick Stats

Popularity Rank
#1,147
Total SSA Count
183
Syllables
1
Formality
Casual

Playground Safety Score

✓ All Clear
Full profile for Ren →

Popularity Comparison

Kaius Rank #1,137
Ren Rank #1,147

Kaius is more popular, ranked #1137 vs #1147 for Ren.

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

Ren ___

  • Ren Kai
  • Ren James
  • Ren Soren
  • Ren Elliot
  • Ren Arlo
  • Ren Oscar

Sibling Name Ideas

Names that pair well as siblings.

If you choose Kaius

Callum Leona Aurora Finn Cassius

If you choose Ren

Kai Sora Yuki Hana Mio

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 Ren more popular?

Kaius is more popular, ranked #1137 compared to Ren at #1147 in the United States.

What do Kaius and Ren mean?

Kaius means "rejoice, be glad" (Latin origin). Ren means "lotus, water lily" (Japanese origin).

Are Kaius and Ren boy or girl names?

Kaius is primarily a boy name. Ren is primarily a boy name.

More Comparisons

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