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Name Lineage

    The first name Tamsin

    A girl’s name from Aramaic.

    2 syllables Female

    Meaning and origin

    Aramaic origin

    A medieval contraction of Thomasina, a feminine form of Thomas, revived in the UK in the twentieth century.

    From Wiktionary (CC BY-SA 4.0).

    Popularity

    Babies registered in England and Wales, 1996–2025

    In 2025, 7 girls were named Tamsin, making it the 3,333rd most popular girls’ name. It peaked in 1996, with 137 births (#271).

    0100200 1996200020052010201520202025
    1,748
    babies named Tamsin, 1996–2025
    #3,333
    rank in 2025
    1996
    peak year

    Office for National Statistics; years with fewer than three births are not published and show as zero. Compare Tamsin with other names.

    Popularity in the United States

    Babies named Tamsin at birth, 1880–2025

    In 2024, 7 girls born in the United States were named Tamsin, the 13,343rd most popular girls’ name that year. It was used most in 2017, when 27 were.

    01530 188018851890189519001905191019151920192519301935194019451950195519601965197019751980198519901995200020052010201520202025
    413
    babies named Tamsin since 1880
    #13,343
    rank in 2024
    2017
    peak year

    US Social Security Administration, from applications for a Social Security card. A name is only published for a year when at least five babies were given it, so quieter years show as zero.

    Nicknames and spellings

    Nicknames for Tamsin

    • Tam

    Other spellings and forms

    • Tamsyn

    Famous people named Tamsin

    3 on Wikidata, most written-about first

    • Tamsin Greig
      British actress (born 1966)
    • Tamsin Egerton
      British actress, born 1988
    • Tamsin Cook
      Australian swimmer, born 1998

    Questions

    What does the name Tamsin mean?
    A medieval contraction of Thomasina, a feminine form of Thomas, revived in the UK in the twentieth century.
    What is the origin of the name Tamsin?
    A medieval contraction of Thomasina, a feminine form of Thomas, revived in the UK in the twentieth century.
    How popular is the name Tamsin?
    In 2025, 7 girls born in England and Wales were named Tamsin, ranking 3,333rd. Its peak was 1996, with 137 births.
    What are nicknames for Tamsin?
    Common nicknames for Tamsin include Tam.
    Is Tamsin a boy's or a girl's name?
    Mostly a girl's name: 100% of the 413 US babies named Tamsin since 1880 were girls.
    When was Tamsin most popular?
    2017 in the United States, when 27 babies were named Tamsin, its highest rank at 5,035th.
    What are other spellings of Tamsin?
    Tamsyn.