Charles-Simon Catel (10 June 1773 – 29 November 1830) was a French composer and educator born at L'Aigle, Orne.^[1]

Catel studied at the Royal School of Singing in Paris. He was the chief assistant to François-Joseph Gossec at the orchestra of the National Guard in 1790. A member of the Institute, he jointly composed pieces of military music for official state ceremonies, including L'Hymne à la Victoire (Victory Hymn), with words by Ponce-Denis Écouchard-Lebrun. He was appointed inaugural professor of harmony at the Conservatoire de Paris, but was relieved of his duties in 1814. Amongst his students were the Prix de Rome winning composers Joseph Daussoigne-Méhul and Victor Dourlen, the Belgian composer Martin-Joseph Mengal, and the famous, if eccentric, harpist Nicolas-Charles Bochsa. Catel died in Paris.

His works include a Treatise on Harmony (1802), which was used by the young Berlioz, several concert band works, several dramatic compositions at the Opéra National de Paris: Sémiramis, Les bayadères; at the Opéra-Comique: Artistes par occasion, L'Auberge de Bagnères (1807); Wallace (1817); symphonies, quartets etc.