Kathleen Riddick (17 July 1907 - 5 February 1973) was a British musician, one of the first women in Britain to establish herself in the male-dominated profession of conducting. To do so at a time when it was "considered impossible" for a woman to become a conductor Riddick was initially obliged to found her own ensembles to lead. They included the Surrey Philharmonic Orchestra in 1932 (of which she was the conductor for 40 years), and the London Women's String Orchestra (later the Riddick Orchestra) in 1938. But she was also appeared as guest conductor of BBC orchestras and the London Symphony Orchestra.