Indonesia is famous for its various ethnic groups, customs, regional languages, and religions. The diversity is spread in various regions ranging from Sabang to Merauke. The diversity of society is very valuable for Indonesia and an attraction for other nations to visit. Indonesia has 6 religious beliefs (Islam, Catholicism, Protestant Christianity, Hinduism, Buddhism, and Confucianism). This paper describes the solution to conflicts and tensions between unity and diversity of society can be understood from the perspective of Islamic law. This study used Library Research with a qualitative, which describes conceptual ideas. The data sources were related literature and documents with the topic discussed in this research. The data analysis technique used in this study was content analysis. The result indicated that true religion raises peace, tranquility, and security for its adherents and respects the differences inherent in others without imposing or highlighting the identity to others. Multiculturalism maintains the integrity and unity of the nation and the homeland through the religious moderation program of the Ministry of Religious Affairs of the Republic of Indonesia. The program aims to avoid conflicts, care for inter-religious, and reject radicalism and mutual professionalism among fellow religions, tribes, and cultures.