Olivia vs Sian

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

Valentina Lydia Delilah Melanie

Full profile for Olivia →

Sian

Boy #9,839 Most Popular

Quick Stats

Popularity Rank: #9,839
Total SSA Count: 9

Playground Safety Score

✓ All Clear

Similar Names

Deshae Argo Dynver Bibb

Full profile for Sian →

Popularity Comparison

Olivia Rank #1

Sian Rank #9,839

Olivia is more popular, ranked #1 vs #9839 for Sian.

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

Sian ___

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 Sian

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 Sian more popular?

Olivia is more popular, ranked #1 compared to Sian at #9839 in the United States.

What do Olivia and Sian mean?

Olivia means "olive tree" (Latin origin).

Are Olivia and Sian boy or girl names?

Olivia is primarily a girl name. Sian is primarily a boy name.

More Comparisons

Sian vs Olivia Olivia vs Valentina Olivia vs Lydia Olivia vs Delilah Olivia vs Melanie

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