Joan Mary Quennell (23 December 1923 – 2 July 2006) was a British Conservative politician who served as the Member of Parliament for Petersfield from 1960 to 1974.
Quennell was the manager of a mixed dairy and arable farm and served as a West Sussex County Councillor 1951–61.
She was a governor of Crawley College of Further Education, and served as a J.P.[1] First elected to Parliament at the 1960 Petersfield by-election, Quennell had been chairman of the Horsham Divisional Conservative Association.
She stood down from parliament in the October 1974 general election, and continued to live at the family home near Rogate until her death.
Quennell died in hospital in Chichester on 2 July 2006, having had recurring bouts of poor health since suffering a stroke a few years earlier.