| Birth Name: | Marie Tournon |
| Nationality: | French |
| Birth Date: | 23 September 1924 |
| Birth Place: | Paris, France |
| Death Place: | Paris, France |
| Significant Buildings: | buildings for the Fleury Abbey, schools in Paris and Manosque, church of the Fontenelle Abbey |
| Awards: | member of the Académie d'architecture |
Marion Tournon-Branly (23 September 1924 – 15 May 2016)[1] was a French architect. She was born in Paris to architect Paul Tournon and painter Élisabeth Branly (daughter of Edouard Branly). After studying at the École nationale supérieure des Beaux-Arts, she collaborated with her father and with Auguste Perret.
She designed villas, elementary schools, buildings for the Fleury Abbey and the modern church of the Fontenelle Abbey.[2]