| Office: | Member of the European Parliament |
| Term Start: | 2024 |
| Birth Date: | 19 January 1994 |
| Party: | National Rally |
Pierre-Romain Thionnet (born 19 January 1994) is a French politician from National Rally. He was elected as a Member of the European Parliament in 2024.[1]
Thionnet was a member of the Regional Council of Île-de-France. He was the chief of staff of Jordan Bardella.[2] He was president of Rassemblement national de la jeunesse, the youth organization of the French National Rally. Thionnet was a candidate in Marne's 5th constituency in the 2022 French legislative election but was defeated in the second round by longstanding Member of Parliament Charles de Courson.
He became a Member of the European Parliament in the 2024 European Parliament election.