Dame Margaret Kate Weston, DBE, FMA (7 March 1926 – 12 January 2021) was a British museum curator who was the director of the Science Museum, London, between 1973 and 1986. She began her career as an electrical engineer before joining the Science Museum in 1955. Weston oversaw the expansion of the museum into the Science Museum Group, including the foundation of the National Railway Museum in York and the National Museum of Photography, Film and Television in Bradford. She also played a key role in acquiring Concorde 002, which is now housed at the Fleet Air Arm Museum in Yeovilton.