Declining since 2016.
Popularity of Tamsyn since 1976
Babies named Tamsyn per year in U.S. Social Security records.
Data table (by decade)
| Decade | Girls |
|---|---|
| 1970s | 37 |
| 1980s | 25 |
| 1990s | 6 |
| 2000s | 11 |
| 2010s | 69 |
| 2020s | 32 |
Meaning & origin
Tamsyn is a rare feminine name first recorded in the United States in 1976. It has never entered the top 1,000, with its peak usage occurring in 2019. The name is falling in recent years, with a downward trajectory since 2016. Tamsyn is a modern variant of Tamsin and Tamzin, which themselves are Cornish diminutives of Thomasina. Its meaning, 'twin', ties it to a long tradition of Thomas-derived names. Despite its low frequency, Tamsyn appeals to parents seeking a distinctive yet familiar-sounding name with a touch of Cornish heritage.
Tamsyn is a modern feminine elaboration of Thomas, derived from the Aramaic t'om'a, meaning 'twin'. While Tamzin and Tamsin have historical Cornish origins as diminutives of Thomasina, the Tamsyn spelling emerged more recently in the 20th century, reflecting a stylistic preference for 'y' endings in English coinages.
Nicknames & variants
Nicknames: Tam, Tams, Tammy
Sibling names for Tamsyn
Names that share Tamsyn's style, for a brother or sister.

