Given name & surname
Tamsin
“a twin”·“twin”·“son of Thomas”
In English use, Tamsin is a contracted form of Thomasina. In Hebrew use, Thomasina carries the interpretation “a twin.” In English use, Tamsin is a feminine form of Thomas. The original Aramaic byname means “twin.”
Meaning & origin
What it means
In English use, Tamsin is a contracted form of Thomasina. In Hebrew use, Thomasina carries the interpretation “a twin.” In English use, Tamsin is a feminine form of Thomas. The original Aramaic byname means “twin.” Tamsin is a variant of Tamson. One English interpretation is “son of Thomas.”
Explained through its name family
Where it comes from
In English use, Tamsin is a feminine form of Thomas. Thomas developed from an Aramaic byname and reached wider use through its Greek biblical form. Tamsin is a variant of Tamson. An origin associated with Tamson is English.
Explained through its name family
How it developed
In English use, Tamsin is used as a contracted form of Thomasina. In English use, Tamsin is a feminine form of Thomas. The shared background comes through Thomas: The apostle is called Thomas and also Didymus in the New Testament. Didymus reflects the Greek word for “twin,” matching the meaning of the Aramaic byname behind Thomas.
Combines direct and name-family evidence
The story
Published U.S. birth records include this spelling as early as 1955. This is the earliest published observation available here, rather than a date for the name’s origin. In English use, Tamsin is a feminine form of Thomas. The history of Thomas gives this family its wider story. Thomas was the name of one of Jesus’s twelve apostles, remembered in Christian tradition for his doubts and later reassurance. That story helped establish the name across Christian naming traditions.
Combines direct and name-family evidence
Tamsin through the years
- Babies since 1880
- 413
- 0 boys · 413 girls
- Most popular year
- 2017
- 27 babies
- 2025
- 0
- Outside the ranked list
- 2021–25 vs 2016–20
- −60%
- Cooling
By the numbers
The most recent published U.S. birth count for girls is 7 in 2024. Later missing counts do not mean the name went unused. Its largest published annual count for girls was 27 in 2017. Published U.S. population figures for this spelling include 629 as a first name in 2020.
From Social Security birth records and U.S. Census name counts for this exact spelling. Other spellings are counted separately.
Tamsin’s family of names
In English usage, Tamsin has a diminutive in Tammy. In English usage, Tamsin is a feminine form of Thomas. Tamsin is a contracted form of Thomasina.
Inner ring: nicknames and forms · outer: across languages.
Nicknames & forms 6
Diminutives, pet forms, short forms and variants used alongside the name.
Across languages 7
Equivalents and cognates in other languages, plus older forms it grew from.
People named Tamsin
- Tamsin GreigBritish actress (born 1966)
- Tamsin EgertonBritish actressborn 1988
- Tamsin CookAustralian swimmerborn 1998
- Tamsin OmondBritish author, environmental activist and journalistborn 1984
- Tamsin HinchleyAustralian volleyball playerborn 1980
- Tamsin EdwardsBritish climate scientist (1979-)
- Tamsin WiltonEnglish academic1952–2006
Listed by how widely each person is written about, which says nothing about the name itself.
Appears in
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