| François Fortassin | |
| Office: | Member of the French Senate for Hautes-Pyrénées |
| Term Start: | 2001 |
| Term End: | 2017 |
| Predecessor: | François Abadie |
| Successor: | Michel Pélieu |
| Birth Date: | 2 August 1939 |
| Birth Place: | Sarp, France |
| Nationality: | French |
| Party: | Radical Party of the Left |
François Fortassin (2 August 1939 – 15 May 2017) was a French politician and a member of the Senate of France. He represented the Hautes-Pyrénées department and was a secretary of the Senate and a member of the Radical Party of the Left.[1]