Tamsyn
Thomasina, Thomasine, or Thomasena is the feminine form of the given name Thomas, which means "twin". Thomasina is often shortened to Tamsin. Tamsin can be used as a name in itself; variants of Tamsin include Tamsyn, Tamzin, Tamsen, Tamzen, Tammi, Tamzie and Tamasin. The version "Tamsin" is especially popular in Cornwall and Wales. Along with Tamara it is the ancestor of "Tammy".
- English
Meaning & Origin of Tamsyn
What this name means, where it came from, and how it has traveled across cultures.
Thomasina, Thomasine, or Thomasena is the feminine form of the given name Thomas, which means "twin". Thomasina is often shortened to Tamsin. Tamsin can be used as a name in itself; variants of Tamsin include Tamsyn, Tamzin, Tamsen, Tamzen, Tammi, Tamzie and Tamasin. The version "Tamsin" is especially popular in Cornwall and Wales. Along with Tamara it is the ancestor of "Tammy".
Source: Wikipedia (CC BY-SA 3.0). Read more →
Cultural Origins (via Behind the Name)
- English
The Story of Tamsyn
The earliest SSA record of Tamsyn as a baby girl name dates back to 1976, when 11 babies received it. 2016 was its biggest year on record, with 15 newborns named Tamsyn — #7,601 in the national rankings. The 2010s were its strongest decade, accounting for roughly 38% of all recorded Tamsyns. Its most recent appearance in the national data came in 2024 (5 births); the name has since faded from the published rankings. In total, more than 180 Tamsyns have been born in the U.S. since records began in 1880, spanning the 1970s through the 2020s.
Popularity Over Time
Popularity by State
Variants & Related Forms of Tamsyn
Foreign forms, alternate spellings, and nicknames that share roots with Tamsyn. Linked entries have a profile on Peek a Name.
Names that sound like Tamsyn
Phonetically similar names — useful when Tamsyn is the vibe but a different syllable count or letter feel might suit better. Linked entries have a profile on Peek a Name.
Source: Datamuse . Phonetic similarity ranking, not curated.
Frequently Asked Questions about Tamsyn
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About the name Tamsyn
Tamsyn is a girl baby name tracked by the U.S. Social Security Administration. It first appeared in SSA records in 1976 and has accumulated 180 births in the dataset. Tamsyn's peak popularity came in 2016 when it ranked #7,601. Use the chart and map above to compare Tamsyn's trajectory across years and U.S. states, or browse the related names section to discover similar choices.
Continue exploring
- Top names of 2016 →
- Names of the 2010s →
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- Top names of 2026 →
Data sources
- Birth statistics (counts, ranks, years 1880–2026) — U.S. Social Security Administration . Predictions for years not yet released by SSA are computed by Peek a Name from historical trends; we update with official data as soon as it ships.
- Etymology, cultural origins, and related forms — Behind the Name (used under their public API terms).
- Meaning prose and editorial summary — Wikipedia article extracts, licensed under CC BY-SA 3.0 .
- Predicted nationality distribution — Nationalize.io .
- Phonetically similar names — Datamuse .
Peek a Name aggregates and presents the above data for informational purposes. Statistical predictions and external attributions are clearly labelled where shown; we make no guarantee of accuracy beyond what each source provides.