After the land nationalization plan, disputes arose regarding endowment lands. Therefore, this research was conducted with the aim of implementing the regulations on land nationalization and other laws related to the privatization of endowment lands, with an emphasis on judicial practice. In this, the descriptive-analytical method was used to examine the concepts, discussions, and judicial practices regarding the differences between national and endowment lands. According to the study conducted, it should be stated that national lands in Iranian law include those types of lands that have forest cover or pastures. Declaring these types of lands as national results in objections from the occupants and owners of these lands. Persons who have the right to object to the recognition fall into five general categories: farmers with a land plot, owners, owners of gardens, facilities, organizations, government institutions and non-governmental organizations. If the courts encounter anything other than these, they must issue an order dismissing the lawsuit. Each of the Endowment Departments and the Natural Resources Organization has the ability to verify the authenticity and validity of documents related to their clients.