Cécile Andrée Paule DeWitt-Morette (21 December 1922 – 8 May 2017) was a French mathematician and physicist. She founded a summer school at Les Houches in the French Alps. For this and her publications, she was awarded the American Society of the French Legion of Honour 2007 Medal for Distinguished Achievement. Attendees at the summer school included over twenty students who would go on to be Nobel Prize winners, including Pierre-Gilles de Gennes, Georges Charpak, and Claude Cohen-Tannoudji, who identify the school for assisting in their success.