Introduction. The research is determined by the current trends of globalization and the need to build a dialogue of cultures based on justice and giving the priority to the local models of justice. The subject of the research is the model of justice in Moksha and Erzia tales. The purpose of the work is to identify different models of justice of the Moksha and Erzia ethnic groups, their identity and the difference with models of other cultures, to generalize the content of the category of justice in the Mordovian ethnoculture. Materials and Methods. The research material includes Mordovian folk tales. The method of analysis is applied to identify the models of justice in the studied material. When comparing the similar tales of different cultures, we use the method of comparison and the principle of the reduction of the identities, which detects differences in the similarities; the method of generalization allows us to systematize the results, the method of synthesis lets us draw conclusions. The model of justice in folklore and tales has not been studied much, so the theoretical basis of the research covers the works devoted to the analysis of Mordovian folklore as a whole as well as various studies of the category of justice. Results and Discussion. The model of Mordovian justice includes collective labor, mutual assistance, collective ownership and self-government, creative work and a decent remuneration, ethnic education, upbringing in the tradition, freedom of the development, the perfectionism and the vertical social mobility, the reward of the virtue and the denunciation of the vice, fair judgment, everyone’s equality in the court, the marriage of the equals, reproduction, the identity and the identification, the unity of the human and the nature. The private ownership of resources, the work that does not save from poverty, unfair courts, restrictions on the freedom of development and education, the abuse of children and women, and the neglect of the elderly are assessed as unfair. Conclusion. The set of models obtained in accordance with different cultural approaches allows us to obtain a dimensial, complete, systematic image of ethno-cultural justice which provides us a better understanding of the culture of the people. The research has shown that the models of justice in Moksha and Erzia folklore are similar. It has revealed the general content of the Mordovian models of justice, as well as the unique features of the Moksha and Erzia models, their identity and differences with the models of other cultures.