Elsie Spain, born Elsie Rickets, was an English opera singer and actress, best known for her performances in soprano roles of the Savoy Operas with the D'Oyly Carte Opera Company from 1908 to 1910 and in operettas and Edwardian musical comedies. She was one of the last leading ladies in the Gilbert and Sullivan roles personally trained by W. S. Gilbert. Among her roles in musicals, she originated the part of Princess Mathilde in the long-running The Quaker Girl.

The Quaker Girl is an Edwardian musical comedy in three acts with a book by James T. Tanner, lyrics by Adrian Ross and Percy Greenbank, and music by Lionel Monckton. In its story, The Quaker Girl contrasts dour Quaker morality with Parisienne high fashion. The protagonist, Prudence, is thrown out of her house by her quaker parents for drinking a glass of champagne. Later, in Paris, her simple grey dress and bonnet become the height of fashion.