This article examines the role of ulama in the implementation of Sharia in Aceh by focusing on the study of their fatwa concerning apostasies and heresy. Since the time of the Aceh Sultanate, the role of the ulama has been prominent as the royal judges who applied sharia due to the status Aceh as the region that embraces Sunni Islam as the official schools of jurisprudence and theology. This situation continues in the period of independence and it has legally been further strengthened in the post-Soeharto regime (reformation era) by the special autonomy status granted to Aceh that includes the right to implement sharia in full. Based on the special autonomy, the council of ulama in Aceh, known as Majelis Permusyawaratan Ulama (the Consultat...