Cassian vs Olivia

Baby Name Comparison — 2026

Cassian

Boy #617 Most Popular 3 Syllables

Meaning

"of the Cassian family (Roman gens)"

Origin: Latin

Cultural Roots

English American European

Quick Stats

Popularity Rank
#617
Total SSA Count
462
Syllables
3
Formality
Moderate
Nicknames
Cass, Cas

Playground Safety Score

✓ All Clear
Full profile for Cassian →

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

Cassian Rank #617
Olivia Rank #1

Olivia is more popular, ranked #1 vs #617 for Cassian.

Popularity Over Time

Historical US popularity rank — lower number means more popular.

Middle Name Pairings

Cassian ___

  • Cassian James
  • Cassian Alexander
  • Cassian Oliver
  • Cassian Alaric
  • Cassian Frederick
  • Cassian Julian

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 Cassian

Sebastian Dorian Vivienne Isolde Adrian

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 Cassian or Olivia more popular?

Olivia is more popular, ranked #1 compared to Cassian at #617 in the United States.

What do Cassian and Olivia mean?

Cassian means "of the Cassian family (Roman gens)" (Latin origin). Olivia means "olive tree" (Latin origin).

Are Cassian and Olivia boy or girl names?

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

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