Olivia vs Theatus

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

Cora Ella Samantha Isabelle

Full profile for Olivia →

Theatus

Girl #37,773 Most Popular

Quick Stats

Popularity Rank: #37,773
Total SSA Count: 6
Nicknames: The, Thea, Theay

Playground Safety Score

✓ All Clear

Similar Names

Berth Clodie Wina Farrel

Full profile for Theatus →

Popularity Comparison

Olivia Rank #1

Theatus Rank #37,773

Olivia is more popular, ranked #1 vs #37773 for Theatus.

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

Theatus ___

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 Theatus

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 Theatus more popular?

Olivia is more popular, ranked #1 compared to Theatus at #37773 in the United States.

What do Olivia and Theatus mean?

Olivia means "olive tree" (Latin origin).

Are Olivia and Theatus boy or girl names?

Olivia is primarily a girl name. Theatus is primarily a girl name.

More Comparisons

Theatus vs Olivia Olivia vs Cora Olivia vs Ella Olivia vs Samantha Olivia vs Isabelle

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