Monsù Desiderio is the name formerly given to an artist believed to have painted architectural scenes in a distinctive style in Naples in the early seventeenth century. The term Monsù, a corruption of the French monsieur, was often used by Neapolitan historians to denote a painter of foreign origin.
In the mid-twentieth century, art historians identified the works previously attributed to "Desiderio" as being by at least three different painters: François de Nomé (1593 – after 1620) and Didier Barra, both originally from Metz, and a third artist, whose name is unknown. Nomé's works were described by Rudolf Wittkower as "bizarre and ghostlike paintings of architecture, often crumbling and fantastic".
- Wittkower, Rudolf (1973) . Art and Architecture in Italy. The Pelican History of Art (First paperback ed.). Harmondsworth: Penguin Books.
- "Didier Barra". Painting in Naples: From Carravaggio to Giordano. Exhibition Catalogue. London: Royal Academy. 1982. p. 108.