The role of Majelis Ulama Indonesia (Indonesian Ulema Council) in influencing the construction of democracy through its fatwas has fluctuated since its establishment in 1975. During the Suharto regime, which was characterised by authoritarian national leadership, MUI fatwas tended to serve the interests of the regime. Since the reform era, they have stimulated undemocratic circumstances in Indonesian Islam. This article examines MUI fatwas and their influence on democracy in the context of Indonesian Islam. The main argument of this article is that fatwas in themselves can improve or worsen the implementation of democracy. Fatwas may impede democracy if their contents are not aligned with democratic principles, while they may support the development of democracy if their contents promote democracy. Rising conservatism in Indonesia has been influenced by the issuance of fatwas that do not promote democratic values. In addition to examining the roles of fatwa givers and the methodology of fatwa issuance, this article analyses the social and political circumstances driving their issuance. This article presents examples of MUI fatwas that have democratic and undemocratic characteristics. It concludes that democratic circumstances can be achieved through opening spaces for fatwa issuance among additional fatwa institutions in Indonesia, as the monopolisation of fatwa issuance has created undemocratic tendencies in Indonesian Islam.