This article describes the role of Hinduism in modern Indonesia and the ways in which it has been adapted to fit the government's definition of religion as a prophetic monotheism with revealed texts and a universal ethic. It gives a brief background on Indonesian history and analyzes the structure and theology of Agama Hindu Dharma Indonesia. It discusses whether a governmental reorganization of an ancient religion can be considered a new religious movement, and some approaches that might be useful from the field of religious studies. It suggests that the definition of new religious movement be changed to fit the case in which a modern religion considered to be a revealed religion also acts as a civil religion.