Brennon vs Rei

Baby Name Comparison — 2026

Brennon

Boy #3,714 Most Popular 2 Syllables

Meaning

"descendant of Braonán (moisture/sorrow)"

Origin: Irish Gaelic

Cultural Roots

Irish American Scottish

Quick Stats

Popularity Rank
#3,714
Total SSA Count
30
Syllables
2
Formality
Moderate
Nicknames
Bren, Brenny

Playground Safety Score

✓ All Clear
Full profile for Brennon →

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

Brennon Rank #3,714
Rei Rank #3,800

Brennon is more popular, ranked #3714 vs #3800 for Rei.

Popularity Over Time

Historical US popularity rank — lower number means more popular.

Middle Name Pairings

Brennon ___

  • Brennon James
  • Brennon Patrick
  • Brennon Thomas
  • Brennon Michael
  • Brennon Sean
  • Brennon Ryan

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 Brennon

Declan Ronan Conor Siobhan Maeve

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 Brennon or Rei more popular?

Brennon is more popular, ranked #3714 compared to Rei at #3800 in the United States.

What do Brennon and Rei mean?

Brennon means "descendant of Braonán (moisture/sorrow)" (Irish Gaelic origin). Rei means "courtesy, respect, gratitude" (Japanese kanji 礼 origin).

Are Brennon and Rei boy or girl names?

Brennon is primarily a boy name. Rei is primarily a boy name.

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