Dieynaba Diop is a French politician of the Socialist Party who was elected member of the National Assembly for Yvelines's 9th constituency in 2024. She serves as deputy mayor of Les Mureaux and as a member of the Regional Council of Île-de-France. Within the Socialist Party she serves as a spokesperson and as its departmental secretary in Yvelines. She was a candidate for the European Parliament in the 2024 European Parliament election.