The Wicked Lady is a 1945 British costume drama film directed by Leslie Arliss and starring Margaret Lockwood in the title role as a nobleman's wife who becomes a highwaywoman for the excitement. The film had one of the largest audiences for a film of its period, 18.4 million.It was one of the Gainsborough melodramas, a sequence of very popular films made during the 1940s. In 2020, Filmink magazine said "if you only see one Gainsborough melodrama, this is the one to check out."The story was based on the 1945 novel Life and Death of the Wicked Lady Skelton by Magdalen King-Hall which, in turn, was based upon the (disputed) events surrounding the life of Lady Katherine Ferrers, the wife of the major landowner in Markyate on the main London–Birmingham road.

The film was loosely remade by Michael Winner as The Wicked Lady in 1983.