| Marie-Agnès Poussier-Winsback | |
| Office: | Member of the National Assembly for Seine-Maritime's 9th constituency |
| Term Start: | 22 June 2022 |
| Predecessor: | Stéphanie Kerbarh |
| Birth Date: | 25 March 1967 |
| Birth Place: | Nancy, France |
| Party: | Horizons (since 2021) |
| Otherparty: | Republican (2015-2021) UMP (2002-2015) RPR (1989-2002) |
| Alma Mater: | Paris-Panthéon-Assas University |
| Term End: | 9 June 2024 |
| Successor: | to be elected |
Marie-Agnès Poussier-Winsback (born 25 March 1967) is a French politician. As a member of Horizons, she was elected member of parliament for Seine-Maritime's 9th constituency in the 2022 French legislative election.
She is running for a second term in the 2024 French legislative election.[1]