Olivia vs Oneil

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

Iris Mary Lillian Delilah

Full profile for Olivia →

Oneil

Boy #12,528 Most Popular

Quick Stats

Popularity Rank: #12,528
Total SSA Count: 8
Nicknames: One, Ony, Onie

Playground Safety Score

✓ All Clear

Similar Names

Binu Avren Kuan Jerud

Full profile for Oneil →

Popularity Comparison

Olivia Rank #1

Oneil Rank #12,528

Olivia is more popular, ranked #1 vs #12528 for Oneil.

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

Oneil ___

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 Oneil

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 Oneil more popular?

Olivia is more popular, ranked #1 compared to Oneil at #12528 in the United States.

What do Olivia and Oneil mean?

Olivia means "olive tree" (Latin origin).

Are Olivia and Oneil boy or girl names?

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

More Comparisons

Oneil vs Olivia Olivia vs Iris Olivia vs Mary Olivia vs Lillian Olivia vs Delilah

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