Judiciary, being the sentinel of constitutional and statutory rights of citizens has a special role to play in the constitutional scheme. It can review legislation and administrative actions or decisions on the anvil of constitutional law. In Bangladesh, for the enforcement of fundamental rights one has to move the Supreme Court or the High Court directly by invoking Writ Jurisdiction of these courts. Till 1960s and 70’s, the concept of litigation in the then East Pakistan and thereafter in Bangladesh was still in its rudimentary form and was seen as a private pursuit for the vindication of private vested interests. Litigation in those days consisted mainly of some action initiated and continued by certain individuals, usually, addressing their own grievances/problems. There were very little organized efforts or attempts to take up wider issues that affected classes of consumers or the general public at large. However, these entire scenarios changed with the emergence of the concept of public interest litigation (PIL). This article will discuss theoretically, the scope of Writ jurisdiction of Supreme Court in effectively ensuring fundamental rights, the role of public interest litigation in ensuring justice and its relation to Writ jurisdiction.