The Spectre Knight is a one-act "fanciful operetta" with a libretto by James Albery and music by Alfred Cellier. It was first performed on 9 February 1878 at the Opera Comique by the Comedy Opera Company as a companion piece to The Sorcerer. The piece continued to run until 23 March 1878 and was revived by the company from 28 May 1878 to 10 August 1878 as a companion piece to H.M.S. Pinafore. The piece had a run in New York in 1880 and was toured in Britain and America.