Mo vs Olivia

Baby Name Comparison — 2026

Mo

Girl #17,973 Most Popular

Quick Stats

Popularity Rank: #17,973
Total SSA Count: 7

Playground Safety Score

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Similar Names

Avryn Avaia Amalina Harlen

Full profile for Mo →

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

Bella Emilia Madeline Amira

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Popularity Comparison

Mo Rank #17,973

Olivia Rank #1

Olivia is more popular, ranked #1 vs #17973 for Mo.

Popularity Over Time

Historical US popularity rank — lower number means more popular.

Middle Name Pairings

Mo ___

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 Mo

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 Mo or Olivia more popular?

Olivia is more popular, ranked #1 compared to Mo at #17973 in the United States.

What do Mo and Olivia mean?

Olivia means "olive tree" (Latin origin).

Are Mo and Olivia boy or girl names?

Mo is primarily a girl name. Olivia is primarily a girl name.

More Comparisons

Olivia vs Mo Mo vs Avryn Mo vs Avaia Mo vs Amalina Mo vs Harlen

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