Olivia vs Una

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

Olivia Rank #1
Una Rank #2,965

Olivia is more popular, ranked #1 vs #2965 for Una.

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

Una ___

  • Una Rose
  • Una Mae
  • Una Grace
  • Una Claire
  • Una Violet
  • Una Pearl

Sibling Name Ideas

Names that pair well as siblings.

If you choose Olivia

Liam Noah Charlotte Emma Sophia

If you choose Una

Nora Finn Mara Leo Iris

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 Una more popular?

Olivia is more popular, ranked #1 compared to Una at #2965 in the United States.

What do Olivia and Una mean?

Olivia means "olive tree" (Latin origin). Una means "one, unity" (Latin origin).

Are Olivia and Una boy or girl names?

Olivia is primarily a girl name. Una is primarily a girl name.

More Comparisons

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