| Jean-Jacques Hyest | |
| Office: | Member of the Constitutional Council |
| Term Start: | 12 October 2015 |
| Term End: | 11 March 2019 |
| Appointer: | Gérard Larcher |
| President: | Jean-Louis Debré Laurent Fabius |
| Predecessor: | Hubert Haenel |
| Successor: | François Pillet |
| Office2: | Member of the French Senate for Seine-et-Marne |
| Term Start2: | 1995 |
| Term End2: | 2015 |
| Birth Date: | 2 March 1943 |
| Birth Place: | Fontainebleau, France |
| Nationality: | French |
| Party: | The Republicans |
Jean-Jacques Hyest (born 2 March 1943) is a former member of the Senate of France, who represented the Seine-et-Marne department. He is a member of the Union for a Popular Movement.