A Gaiety Girl is an English musical comedy in two acts by a team of musical comedy neophytes: Owen Hall, Harry Greenbank (lyrics) and Sidney Jones (music). It opened at Prince of Wales Theatre in London, produced by George Edwardes, on 14 October 1893 and ran for 413 performances. The show starred C. Hayden Coffin, Louie Pounds, Decima Moore, Eric Lewis, W. Louis Bradfield, and later Rutland Barrington, Scott Russell, Huntley Wright, Marie Studholme and George Grossmith, Jr. Topsy Sinden and later Letty Lind danced in the piece. Choreography was by Willie Warde. Percy Anderson designed the Japanese costumes for the musical, while the non-Japanese costumes were supplied by leading fashion houses. Blanche Massey was one of the Gaiety Girls in the piece. It also had a successful three-month Broadway run in 1894, followed by an American tour and a world tour.

George Joseph Edwardes was an English theatre manager and producer of Irish ancestry who brought a new era in musical theatre to the British stage and beyond.