The People's Democratic Movement (Spanish: Movimiento Democrático Popular, MDP) was a Chilean left-wing political party created on September 20, 1983 and dissolved on June 26, 1987.

The MDP led the so-called "Jornadas de Protesta Nacional" driven by opposition to the military dictatorship of General Augusto Pinochet, while actively involved in the reconstruction of the social movements of people, students and workers.

This document stated that the road for ending the military dictatorship was "the struggle of the masses, the unity of the left and a development of the most diverse forms of combat which express the rebellious spirit of the people".

Since its inception the MDP showed himself a staunch opponent of the regime and demanded its immediate end and a general agreement with the Democratic Alliance to establish a provisional government without exclusions.

[3][4] In August 1984, politicians, lawyers, businessmen and civilians who supported the military regime, including Jaime Guzmán and Pablo Longueira, required the Constitutional Court of Chile, which declared the unconstitutionality of this movement.