| Marius Roustan | |
| Birth Date: | 20 February 1870 |
| Birth Place: | Sète, Hérault, France |
| Death Place: | Montpellier, Hérault, France |
| Occupation: | Politician |
Marius Roustan, also known as Mario Roustan, (1870–1942) was a French politician. He served as a member of the French Senate from 1920 to 1941, representing Hérault.[1]