Polly Young (7 July 1749 – 20 September 1799) was an English soprano, composer and keyboard player. She was part of a well-known English family of musicians that included several professional singers and organists during the 17th and 18th centuries. Her husband, François-Hippolyte Barthélémon, was a composer and violinist, and their daughter, Cecilia Maria Barthélemon, was also a composer and opera singer.
