Cassius vs Flynn

Baby Name Comparison — 2026

Flynn

Boy #738 Most Popular 1 Syllable

Meaning

"son of the red-haired one"

Origin: Irish Gaelic

Cultural Roots

Irish English Australian American

Quick Stats

Popularity Rank
#738
Total SSA Count
351
Syllables
1
Formality
Moderate
Nicknames
Fly, Flie, Flykins

Playground Safety Score

✓ All Clear
Full profile for Flynn →

Popularity Comparison

Cassius Rank #568
Flynn Rank #738

Cassius is more popular, ranked #568 vs #738 for Flynn.

Popularity Over Time

Historical US popularity rank — lower number means more popular.

Middle Name Pairings

Cassius ___

  • Cassius James
  • Cassius Marcus
  • Cassius Cole
  • Cassius Reid
  • Cassius Blake
  • Cassius Grant

Flynn ___

  • Flynn William
  • Flynn Thomas
  • Flynn James
  • Flynn Alexander
  • Flynn Reid
  • Flynn Patrick

Sibling Name Ideas

Names that pair well as siblings.

If you choose Cassius

Octavia Maximus Leonora Atticus Valentina

If you choose Flynn

Finn Declan Callum Rory Nora

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 Cassius or Flynn more popular?

Cassius is more popular, ranked #568 compared to Flynn at #738 in the United States.

What do Cassius and Flynn mean?

Cassius means "hollow, empty" (Latin origin). Flynn means "son of the red-haired one" (Irish Gaelic origin).

Are Cassius and Flynn boy or girl names?

Cassius is primarily a boy name. Flynn is primarily a boy name.

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← Full profile: Cassius ← Full profile: Flynn Browse all baby names