Castle of Blood (Italian: Danza Macabra, lit. 'Dance Macabre') is a 1964 gothic horror film directed by Antonio Margheriti and starring Barbara Steele, Georges Rivière, Margarete Robsahm, Arturo Dominici, Silvano Tranquilli and Umberto Raho. It was an Italian-French co-production.

The film was initially commissioned to director Sergio Corbucci, who had Gianni Grimaldi and Bruno Corbucci set to write the film. A scheduling conflict led to Corbucci's friend Margheriti being hired to complete the film. To avoid going over time, Corbucci was brought in to film one scene.

The film was released in Italy in 1964 and received low box office numbers, which led to Margheriti remaking the film in colour as Web of the Spider (1971).