This study explores the implementation of anti-corruption education in traditional Islamic boarding schools (dayah) in Aceh, Indonesia. Grounded in qualitative research design, data were collected through in-depth interviews, observation, and document analysis at selected dayahs. The findings reveal that anti-corruption values are not taught as isolated subjects but are embedded holistically in religious instruction, institutional policies, daily routines, and the moral example of teachers (teungku). The integration of classical Islamic texts—such as fiqh, aqidah, and akhlaq—with ethical conduct fosters an environment where values like honesty, responsibility, and justice are lived and reinforced through practice. Institutional leadership plays a key role in maintaining consistency between curriculum and conduct, while student organizations support peer-led accountability. This educational model represents a distinctive bottom-up approach rooted in religious and communal traditions, contributing to character formation and civic responsibility. Moreover, the Acehnese dayah model offers globally relevant insights for anti-corruption strategies by highlighting the role of culturally embedded, faith-based institutions in shaping ethical behavior. The study suggests that integrating spiritual, moral, and civic education through trusted local institutions may provide effective alternatives to formal, legalistic anti-corruption initiatives, especially in plural societies and post-conflict regions.