The accelerated growth of the amount of municipal waste and the growing problem of waste disposal by landfill actualize this topic to the level where it becomes an important segment of thinking about the necessity of sustainable municipal waste management. Local self-government units have an important role in developing public awareness of the avoidance and reduction of municipal waste, the provision of municipal waste collection and disposal services and the systematic planning of sustainable municipal waste management. This final paper provides an insight into the role of local self-government units in sustainable municipal waste management. In addition to the theoretical determinants of sustainable II waste management, it provides insight into the obligations given to local self-government units in accordance with the legislation in the Republic of Croatia, which follows the goals of the circular economy adopted at the European Union level, through which the European Union wants to maintain competitiveness and be a leader in environmental protection. The paper is further presents the analysis of waste management at the level of local self-government units in the Republic of Croatia with reference to the good practice of waste management of local self-government units on the island of Krk