Olivia vs Reileen

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

✓ All Clear

Similar Names

Paisley Samantha Luna Wrenley

Full profile for Olivia →

Reileen

Girl #40,265 Most Popular

Quick Stats

Popularity Rank: #40,265
Total SSA Count: 5
Nicknames: Rei, Reil, Reily

Playground Safety Score

✓ All Clear

Similar Names

Tenney Mu Sevy Silayah

Full profile for Reileen →

Popularity Comparison

Olivia Rank #1

Reileen Rank #40,265

Olivia is more popular, ranked #1 vs #40265 for Reileen.

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

Reileen ___

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 Reileen

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 Reileen more popular?

Olivia is more popular, ranked #1 compared to Reileen at #40265 in the United States.

What do Olivia and Reileen mean?

Olivia means "olive tree" (Latin origin).

Are Olivia and Reileen boy or girl names?

Olivia is primarily a girl name. Reileen is primarily a girl name.

More Comparisons

Reileen vs Olivia Olivia vs Paisley Olivia vs Samantha Olivia vs Luna Olivia vs Wrenley

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