Skip to main content
 
Namesake

A name chosen, not stumbled upon.

Explore
  • All Names
  • Celtic Names
  • Norse Names
  • Rising Names
  • Gender-Neutral Names
More lists
  • Name Collections
  • Hebrew & Biblical
  • Nature Names
  • Literary Names
  • Rare & Beautiful
  • Classic Names
Guides
  • How to Choose a Name
  • Baby Name Checklist
  • Partner Disagreement
  • Popularity Data
  • Pronunciation Test

Made with love for growing families.

PrivacyTermsContactOur storyHow it works

© 2026 Namesake · namesake.baby

Data: Social Security Administration, US births 1880–2024

Tamsyn — Meaning, Origin & Popularity | Namesake
All names
Tamsin|Tamya
CelticGirl↓ Fading

Tamsyn

TAM-sin · 2 syllables

Share Tamsyn:
Compare with another name
Girl
#17369
↓ Fading
#17369
in the US · 2024
Popularity score: 1
Peak rank
#12087 in 2021
5yr change
-4056 ranks
Birth frequency
1.4 per 1,000,000 births
Sex split
0% boy · 100% girl

Popularity Over Time

↑ Higher on this chart = more popular · ↓ Lower = less popular

Average0255075100Popularity score (0–100)20202024

Rank #17369 · Falling since 2020

How Popular Is This Name?

Bars show the range of popularity for each group. The dot shows where this name sits. Further right = more popular.

All US girl names
Top 200 girl names
Celtic girl names
Tamsyn

Popularity score: 1  ·  SSA Rank: #17369

Rare  ·  Distinctive  ·  Familiar  ·  Common  ·  Very Common

Popularity score: 0 = least popular, 100 = most popular. Based on SSA rank.

Namesake Score
40
Higher than 40% of names
Combines uniqueness, trend, meaning, feasibility, and search interest.
Trend
↓ Fading
-4056 ranks
Based on SSA rank velocity
Feasibility
Limited
.com taken · — · clear
Low friction, available
Uniqueness
55
37 per 10,000 births
Won't be common in class

Tamsyn scores lower overall — the popularity trend is fading.

Meaning Depth37% of score
60
Name Trend28% of score
32
Uniqueness20% of score
55
Feasibility15% of score
50

Scores are percentile-ranked across 43,000+ names.

Name DNA
CelticCornishGirl2-syllableVintageNature-adjacentRareLiteraryRising indie popularity
Character
dark, mysterious allure
STRONG
High confidence

Tamsyn is a Celtic girl name with cooling SSA momentum. It ranked #17369 in the US in 2024.

Trend:↓ Fading · -4056 ranks
Feasibility:.com taken · — · clear
Popularity:#17369 · very rare
Tamsyn at a Glance
Meaning:From Cornish, likely derived from 'tam' (dark) or related to the name Tamsin, meaning 'twin' in Aramaic origins, blended with Celtic tradition.
Language root:Cornish · Celtic
Peak rank:#12087 in 2021
5yr change:-4056 ranks
Sex usage:0% boy · 100% girl
Notable bearers
Tamsyn Muir
Author
Similar Sound
TamsinTasmanTallonTavonTyson◈
Similar Style
GwendolynBranwenIsoldeCerysRowena
Works well with
ElowenBrionyCleo◈IrisFelixJasper◈Corwin
You Might Also Like
Gwendolyn
Welsh · #393
→ Stable
Isolde
Celtic · #7721
↓ Fading
Cerys
Welsh · —
→ Stable
Rowena
Celtic · #3430
↑↑ Surging
Ava
Celtic · #9
→ Stable
Aria
Celtic · #26
→ Stable
Source: Social Security Administration baby names data. Popularity data reflects US births. Feasibility data updated monthly.
Name Intelligence
Tamsyn · Overview
Summary

Tamsyn is a Celtic girl name with cooling SSA momentum. It ranked #17369 in the US in 2024.

Strengths
Vintage character
Tamsyn carries a gentle, cool quality that makes it distinctive without being invented.
Considerations
Popularity declining
Rank has dropped 4056 positions in the last year. Consider whether this trajectory matters for your decision.
Domain taken
tamsyn.com is not available. Alternative TLDs may work.
Explore

Add to watchlists or your list with + Save next to the name above.

Data source:Social Security Administration
Coverage:US births 1879–2024
Updated:January 2025
ISR:Refreshes monthly
Namesake
Name WizardName CollectionsAll NamesName CascadeBaby ShowerMy Name List

Still deciding?

Every naming product helps you find names. Namesake is the only one built to help you choose one.

Score what matters to you. Run names head-to-head. Arrive at the one name you can both explain and defend.

Start the Name Wizard →