The Rose of Castille is an opera in three acts, with music by Michael William Balfe to an English-language libretto by Augustus Glossop Harris and Edmund Falconer, after the libretto by Adolphe d'Ennery and Clairville for Adolphe Adam's Le muletier de Tolède (1854). It was premiered on 29 October 1857, at the Lyceum Theatre, London.

Edmund Falconer, born Edmund O'Rourke, was an Irish poet, actor, theatre manager, songwriter and playwright, known for his keen wit and outstanding acting skills.