Olivia vs Reilyn

Baby Name Comparison — 2026

Olivia

Girl #1 Most Popular 4 Syllables

Meaning

"olive tree"

Origin: Latin

Cultural Roots

English Italian American

Quick Stats

Popularity Rank: #1
Total SSA Count: 14,718
Syllables: 4
Formality: Moderate
Nicknames: Liv, Livvy, Oli

Playground Safety Score

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Similar Names

Elena Ximena Eloise Ariella

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Reilyn

Girl #15,394 Most Popular

Quick Stats

Popularity Rank: #15,394
Total SSA Count: 8
Nicknames: Rei, Reil, Reily

Playground Safety Score

✓ All Clear

Similar Names

Caelia Autunm Hatley Gohar

Full profile for Reilyn →

Popularity Comparison

Olivia Rank #1

Reilyn Rank #15,394

Olivia is more popular, ranked #1 vs #15394 for Reilyn.

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

Reilyn ___

No pairings available yet.

Sibling Name Ideas

Names that pair well as siblings.

If you choose Olivia

Liam Noah Charlotte Emma Sophia

If you choose Reilyn

No sibling data available yet.

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 Reilyn more popular?

Olivia is more popular, ranked #1 compared to Reilyn at #15394 in the United States.

What do Olivia and Reilyn mean?

Olivia means "olive tree" (Latin origin).

Are Olivia and Reilyn boy or girl names?

Olivia is primarily a girl name. Reilyn is primarily a girl name.

More Comparisons

Reilyn vs Olivia Olivia vs Elena Olivia vs Ximena Olivia vs Eloise Olivia vs Ariella

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