Gallantry is a one-act opera by composer Douglas Moore. The work is a parody of soap opera, complete with sung commercial interruptions. The work uses an English-language libretto by Arnold Sundgaard. The opera premiered in a double bill with Dominick Argento's The Boor on March 19, 1958, in New York City at the former Brander Matthews Theater on 117th Street, located between Amsterdam Avenue and Morningside Drive. It was produced by Columbia University School of Music with a student cast. It has been staged over more than forty years by other university opera programs in the United States and Canada.