This article examines the position of the member states of the Organization of Islamic Cooperation (OIC) within the principal organs of the United Nations (UN), as well as their financial contributions to the UN budget. OIC member states constitute more than one-quarter of the UN’s total membership and thus possess the potential to exert considerable influence within the organization. However, an analysis of their participation over the more than 70-year history of the UN reveals that their presence in key organs such as the International Court of Justice, the UN Secretariat, and the Security Council does not correspond proportionately to their collective population size or geographical scope. Furthermore, although the 57 Islamic countries contribute only about 6 percent of the UN budget collectively, this figure is significant given that the remaining 173 member states contributed merely 15 percent of the budget in 2016. A major weakness among Islamic countries lies in their failure to act as a unified identity in electoral competitions for key UN positions or other organizational activities, often pursuing individual or sub-group interests outside the OIC framework.