This study aims to examine the status of land ownership in Simalungun district in terms of historical, social, cultural and tenure perspectives. It is important to study this issue because until now the issue of land ownership has not been thoroughly resolved because there are migrants who claim that their customary land was found in Simalungun, whereas in reality their customary land was not found in Simalungun, but what was found was the king's land ( partuanon) according to the surname of the lord of the rest of the kitchen based on the custom of the tolu sahundulan lima saodoran. The method used in this research is descriptive qualitative with purposive sampling technique. Data analysis begins with the process of collecting primary data through in-depth interviews with 13 informants. By using interview guideline research instruments combined with the results of library research. The results of the interview transcripts were collected, tabulated, analyzed, verified, and displayed until the conclusions of the research results were formulated. The results of this study showed that in Simalungun district there were no customary lands, customary forests and customary lands from migrant residents and ethnic Simalungun. The land in Simalungun district is the king's land (Partuanon), the people and migrants are only given the right to cultivate, not to own in accordance with the ruling king's clan, namely Sisidapur and Simalungun customary law based on the Tolu sahundulan lima saodoran custom. The transfer of rights and land tenure in Simalungun district occurred after the proclamation of 17 August 1945 and the social revolution in 1946. All land in the former autonomous region in Simalungun became state property, including all of PT. TPL Tbk's concession land in Simalungun district.