Rebecca is a musical adaptation of the 1938 novel of the same name by Daphne du Maurier. It was composed by Sylvester Levay with German book and lyrics by Michael Kunze. The plot, which adheres closely to the original novel, revolves around wealthy Maxim DeWinter, his naïve new wife, called "I", and Mrs. Danvers, the manipulative housekeeper of DeWinter's Cornish estate Manderley. Mrs. Danvers resents the new wife's intrusion and persuades her that she is an unworthy replacement for DeWinter's first wife, the glamorous and mysterious Rebecca, who perished in a drowning accident. The new Mrs. DeWinter struggles to find her identity and take control of her life among the shadows left by Rebecca.

Rebecca is a 1938 Gothic novel written by English author Daphne du Maurier. The novel depicts an unnamed young woman who impetuously marries a wealthy widower, before discovering that both he and his household are haunted by the memory of his late first wife, Rebecca.