Marcel François Paul Landowski (18 February 1915 – 23 December 1999) was a French composer, biographer and arts administrator.

Born at Pont-l'Abbé, Finistère, Brittany, he was the son of French sculptor Paul Landowski and great-grandson of the composer Henri Vieuxtemps.

[3] This was part of a so-called "ten-year plan for music", instituted with the intention of establishing an opera company and conservatoire in each of the Regions of France.

In this endeavour Landowski worked with local authorities, especially those in the regional centres such as Bordeaux, Lille, Lyon, Strasbourg and Toulouse, who signed agreements under which the French State would finance a third of each company or ensemble's operating budget.

His entire output includes five symphonies, several concertos (notably two for piano and one each for bassoon, for cello, for flute, for trumpet, for trombone, for violin), operas as well as a Mass and bears testimony to Honegger's impact.