Thomasina or Thomasine 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" and "Tamasin". Although Aramaic in origin, the version "Tamsin" is especially popular in Cornwall and Wales. Along with Tamara it is the ancestor of "Tammy".
Famous Thomasinas
- The Three Lives of Thomasina, a 1964 Disney film about a cat
- Thomasina Tittlemouse (Beatrix Potter)
- Thomasina, the feline heroine of a book by Paul Gallico
- Thomasina, a character in Tom Stoppard's Arcadia
- "Thomasina", a song by The Besnard Lakes
