| Olivier Léonhardt | |
| Birth Date: | 1964 1, df=y |
| Birth Place: | Suresnes, France |
| Death Place: | France |
| Nationality: | French |
| Party: | PS DVG |
| Office: | Member of the French Senate |
| Term Start: | 1 October 2017 |
| Term End: | 2 February 2022 |
| Successor: | Daphné Ract-Madoux |
| Constituency: | Essonne |
| Office2: | President of the Communauté d'agglomération Cœur d'Essonne |
| Term Start2: | 11 January 2016 |
| Term End2: | 12 October 2017 |
| Predecessor2: | position established |
| Successor2: | Éric Braive |
| Office3: | Mayor of Sainte-Geneviève-des-Bois |
| Term Start3: | 18 March 2001 |
| Term End3: | 18 October 2017 |
| Predecessor3: | Pierre Champion |
| Successor3: | Frédéric Petitta |
Olivier Léonhardt (29 January 1964 – 2 February 2022) was a French politician. A member of the Socialist Party and later the Miscellaneous left, he served in the Senate from 2017 until his death.[1] [2] He died from cancer on 2 February 2022, at the age of 58.[3]