Olivia vs Rei

Baby Name Comparison — 2026

Rei

Boy #3,800 Most Popular 1 Syllable

Meaning

"courtesy, respect, gratitude"

Origin: Japanese kanji 礼

Cultural Roots

Japanese American Brazilian

Quick Stats

Popularity Rank
#3,800
Total SSA Count
29
Syllables
1
Formality
Moderate

Playground Safety Score

✓ All Clear
Full profile for Rei →

Popularity Comparison

Olivia Rank #1
Rei Rank #3,800

Olivia is more popular, ranked #1 vs #3800 for Rei.

Popularity Over Time

Historical US popularity rank — lower number means more popular.

Middle Name Pairings

Olivia ___

  • Olivia Rose
  • Olivia Grace
  • Olivia Jane
  • Olivia Mae
  • Olivia Claire
  • Olivia Jade

Rei ___

  • Rei James
  • Rei Thomas
  • Rei Alexander
  • Rei Kenji
  • Rei Haruki
  • Rei Jun

Sibling Name Ideas

Names that pair well as siblings.

If you choose Olivia

Liam Noah Charlotte Emma Sophia

If you choose Rei

Kai Sora Haru Ryu Suki

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 Olivia or Rei more popular?

Olivia is more popular, ranked #1 compared to Rei at #3800 in the United States.

What do Olivia and Rei mean?

Olivia means "olive tree" (Latin origin). Rei means "courtesy, respect, gratitude" (Japanese kanji 礼 origin).

Are Olivia and Rei boy or girl names?

Olivia is primarily a girl name. Rei is primarily a boy name.

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← Full profile: Olivia ← Full profile: Rei Browse all baby names