Caoilainn vs Olivia

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
Full profile for Olivia →

Popularity Comparison

Caoilainn Rank #49,671
Olivia Rank #1

Olivia is more popular, ranked #1 vs #49671 for Caoilainn.

Popularity Over Time

Historical US popularity rank — lower number means more popular.

Middle Name Pairings

Caoilainn ___

No pairings available yet.

Olivia ___

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

Sibling Name Ideas

Names that pair well as siblings.

If you choose Caoilainn

No sibling data available yet.

If you choose Olivia

Liam Noah Charlotte Emma Sophia

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 Caoilainn or Olivia more popular?

Olivia is more popular, ranked #1 compared to Caoilainn at #49671 in the United States.

What do Caoilainn and Olivia mean?

Olivia means "olive tree" (Latin origin).

Are Caoilainn and Olivia boy or girl names?

Caoilainn is primarily a girl name. Olivia is primarily a girl name.

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