Francis Chassaigne (also known as Francisque Chassaigne) (30 October 1847 – 21 December 1922) was a Belgian-born French composer of operettas, songs, and numerous pieces of dance music for piano. The English-language versions of his operettas, Le droit d'aînesse (1883) and Les noces improvisées (1886) became very popular in Britain and the United States. Chassaigne was married to the Swiss-born operetta singer Louise Roland.