The Messenger Boy is a musical comedy in two acts by James T. Tanner and Alfred Murray, lyrics by Adrian Ross and Percy Greenbank, with music by Ivan Caryll and Lionel Monckton, with additional numbers by Paul Rubens. The story concerns a rascally financier who tries to discredit a rival in love; it takes place in London, Cairo and Paris.

Arthur Reed Ropes, better known under the pseudonym Adrian Ross, was a prolific writer of lyrics, contributing songs to more than sixty British musical comedies in the late 19th and early 20th centuries. He was the most important lyricist of the British stage during a career that spanned five decades. At a time when few shows had long runs, nineteen of his West End shows ran for over 400 performances.