This study addressed the issue of economic boycott from the standpoint of Islamic Fiqh, aiming at elucidating the judgment of Shar’s (Islamic jurisprudence). The researcher shows boycott means one’s abstaining from dealing with another economically, according to a planned collective system, with the goal of putting pressure on the other so that they change their policy towards an issue. He also shows that judgment varies depending on different cases, among which are the goods and their nature, the country of producer and relationship with Muslims, in peace or war, conditions of purchase according to monopoly over the Islamic market or its absence. It also depends on the outcome of its implementation with regard to the resultant advantages and disadvantages. The study concludes with the legitimacy of this  boycott is linked to conditions and constraints that must be followed in order to guarantee its success and objectives.