Abstract
This study aims to determine the self-regulation of Indigenous People in complying with the provisions regulated in customary law and to identify and analyze the correlation between self-regulation of Indigenous People and the preservation of nature as a manifestation of local wisdom. This research includes socio legal research with the approach of psychology and law. The data are collected using primary data (information from research informants) and secondary data (relevant documents and activities of people associated with the research). The data are analyzed using qualitative analysis with interactive models of analysis. The research location is in the environment of Samin indigenous people. The results show that customary law is maintained because it has a good purpose followed by an obligation to comply it. Samin community preserve nature because it provides benefits for their life. The community upholds the principles of mutual assistance and do not refuse to cooperate with other parties to preserve nature. It also self-regulates in an effort to comply with customary law and preserve the local wisdom in this case to preserve the environment which arises through two mechanisms: an observational study and self-regulation. Samin community is expected to maintain and preserve the local wisdom that has been there all along. In addition, the government is expected to respect and preserve local wisdom of Samin community by ensuring their rights and encouraging other communities to preserve local wisdom as a part of the cultural wealth of the nation.