| Luc Geismar | |
| Office: | Deputy of Loire-Atlantique's 5th constituency |
| Term Start: | 27 August 2020 |
| Predecessor: | Sarah El Haïry |
| Birth Date: | 1 November 1966 |
| Birth Place: | Colmar, France |
| Education: | Lycée Alfred-Kastler |
| Party: | MoDem |
Luc Geismar (born 1 November 1966) is a French politician who has been Member of Parliament for Loire-Atlantique's 5th constituency since 2020.[1]
He was the substitute candidate for Sarah El Haïry in the 2017 French legislative election, and replaced her when she was appointed Secretary of State for Youth at the Ministry of National Education. He was her substitute again at the 2022 election and replaced her in the 16th Assembly.