Rachael Low (6 July 1923 – 14 December 2014) was a British film historian best known as the author of the seven-volume The History of the British Film.The daughter of the cartoonist Sir David Low, she gained her BSc in sociology and economics in 1944 from the London School of Economics, and received her doctorate from the University of London in 1949.
She published, in seven volumes between 1948 and 1985, The History of the British Film which examines, in exacting detail, film production in Britain from its origins in 1896 up until 1939.
Low was awarded a Research Fellowship by Lucy Cavendish College, Cambridge to facilitate her work on the later volumes of the series.The film critic Matthew Sweet has criticised Low's "tyrannous influence" on the writings of subsequent film historians.