Margaret Leighton (26 February 1922 – 13 January 1976) was an English actress. She was known for her exquisite sense of grandeur and refinement. She created the role of Hannah Jelkes in Tennessee Williams' The Night of the Iguana.
Born in Barnt Green, Worcestershire, Leighton made her stage debut as Dorothy in Laugh With Me (1938), which was also performed that year for BBC Television. She became a star of the Old Vic. Her Broadway debut was as the Queen in Henry IV (1946) starring Laurence Olivier and Ralph Richardson during a visit to America of the Old Vic company, which performed a total of five plays from its repertoire before returning to London.
After appearing in two British films, including the starring role of Flora MacDonald opposite David Niven in Bonnie Prince Charlie (1948), the tall willowy actress played second female lead in Alfred Hitchcock's Under Capricorn (1949) starring Ingrid Bergman, Joseph Cotten and Michael Wilding. She starred with Walter Pidgeon in the Metro-Goldwyn-Mayer crime/mystery Calling Bulldog Drummond (1951).