Rilynn vs Sullivan

Baby Name Comparison — 2026

Rilynn

Girl #1,768 Most Popular 2 Syllables

Meaning

"courageous one from the meadow"

Origin: Old English via Modern American

Cultural Roots

American

Quick Stats

Popularity Rank
#1,768
Total SSA Count
114
Syllables
2
Formality
Casual
Nicknames
Ri, Riri, Lynn

Playground Safety Score

✓ All Clear
Full profile for Rilynn →

Sullivan

Boy #340 Most Popular 3 Syllables

Meaning

"descendant of the dark one"

Origin: Irish Gaelic

Cultural Roots

Irish American English

Quick Stats

Popularity Rank
#340
Total SSA Count
1,011
Syllables
3
Formality
Moderate
Nicknames
Sully, Van

Playground Safety Score

✓ All Clear
Full profile for Sullivan →

Popularity Comparison

Rilynn Rank #1,768
Sullivan Rank #340

Sullivan is more popular, ranked #340 vs #1768 for Rilynn.

Popularity Over Time

Historical US popularity rank — lower number means more popular.

Middle Name Pairings

Rilynn ___

  • Rilynn Mae
  • Rilynn Grace
  • Rilynn Kay
  • Rilynn Jo
  • Rilynn Belle
  • Rilynn Faith

Sullivan ___

  • Sullivan James
  • Sullivan Patrick
  • Sullivan Thomas
  • Sullivan Reid
  • Sullivan Finn
  • Sullivan Grant

Sibling Name Ideas

Names that pair well as siblings.

If you choose Rilynn

Harper Avery Mason Declan Brielle

If you choose Sullivan

Finnegan Declan Bridget Nora Callum

Which Name Fits Your Family?

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1. Which style feels more like your family?

Frequently Asked Questions

Is Rilynn or Sullivan more popular?

Sullivan is more popular, ranked #340 compared to Rilynn at #1768 in the United States.

What do Rilynn and Sullivan mean?

Rilynn means "courageous one from the meadow" (Old English via Modern American origin). Sullivan means "descendant of the dark one" (Irish Gaelic origin).

Are Rilynn and Sullivan boy or girl names?

Rilynn is primarily a girl name. Sullivan is primarily a boy name.

More Comparisons

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← Full profile: Rilynn ← Full profile: Sullivan Browse all baby names