Catlin vs Thomasin

Baby Name Comparison — 2026

Catlin

Girl #22,720 Most Popular 2 Syllables

Meaning

"pure, clear"

Origin: Greek via Irish

Cultural Roots

Irish English Welsh

Quick Stats

Popularity Rank
#22,720
Total SSA Count
7
Syllables
2
Formality
Moderate
Nicknames
Cat, Catie, Lin

Playground Safety Score

✓ All Clear
Full profile for Catlin →

Popularity Comparison

Catlin Rank #22,720
Thomasin Rank #22,900

Catlin is more popular, ranked #22720 vs #22900 for Thomasin.

Popularity Over Time

Historical US popularity rank — lower number means more popular.

Middle Name Pairings

Catlin ___

  • Catlin Marie
  • Catlin Anne
  • Catlin Grace
  • Catlin Elizabeth
  • Catlin Rose
  • Catlin Jane

Thomasin ___

No pairings available yet.

Sibling Name Ideas

Names that pair well as siblings.

If you choose Catlin

Maeve Niamh Aoife Siobhan Declan

If you choose Thomasin

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 Catlin or Thomasin more popular?

Catlin is more popular, ranked #22720 compared to Thomasin at #22900 in the United States.

What do Catlin and Thomasin mean?

Catlin means "pure, clear" (Greek via Irish origin).

Are Catlin and Thomasin boy or girl names?

Catlin is primarily a girl name. Thomasin is primarily a girl name.

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← Full profile: Catlin ← Full profile: Thomasin Browse all baby names