Olivia vs Roo

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

Amara Kinsley Charlotte June

Full profile for Olivia →

Roo

Girl #25,106 Most Popular

Quick Stats

Popularity Rank: #25,106
Total SSA Count: 6

Playground Safety Score

✓ All Clear

Similar Names

Miyanni Nasara Khaos Arevik

Full profile for Roo →

Popularity Comparison

Olivia Rank #1

Roo Rank #25,106

Olivia is more popular, ranked #1 vs #25106 for Roo.

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

Roo ___

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 Roo

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 Roo more popular?

Olivia is more popular, ranked #1 compared to Roo at #25106 in the United States.

What do Olivia and Roo mean?

Olivia means "olive tree" (Latin origin).

Are Olivia and Roo boy or girl names?

Olivia is primarily a girl name. Roo is primarily a girl name.

More Comparisons

Roo vs Olivia Olivia vs Amara Olivia vs Kinsley Olivia vs Charlotte Olivia vs June

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