The movement for the Restoration of Democracy (MRD) was launched against the then military dictatorship in Pakistan in the 1980s. This paper is an attempt to present a historical sketch of the movement and also to discuss the role of the Left in that movement. The study considers those political parties as ‘Left’ which were following Socialist/Communist ideology, based in Sindh, province of Pakistan, specifically Awami Tehrik, a Marxist-Leninist-Moist party, and the Communist Party of Pakistan. This research is based on relevant literature, especially jail diaries and conducting interviews with victims of Communist Case registered by then military regime against communist leaders. The research addresses the events and mass movements launched by the Left in order to strengthen the movement for the restoration of democracy. Moreover, this paper shows how the Left converted a movement for the restoration of democracy into a great mass movement against the then military dictatorship. Key Words: Communist case, democracy, left, military dictatorship, movement for restoration of democracy, Pakistan, Sindh.