Mixed municipal waste is the waste that is coming from the households and from the other sources that is similar in properties and composition to household waste. That kind of the waste is controlled through various laws, plans, and strategies regulate the manner of removal, disposal and thus the separation of waste that could be reused. There are different types of analyzes that can be used for future waste planning and management in order to be successful with the waste management. One of such analyzes is the analysis of the composition of municipal waste, which shows the categories of waste and their shares in mixed municipal waste. The Republic of Croatia, following the example of some members of the European Union, has developed a unique methodology for the analysis of the composition of municipal waste according to the SWA tool. With this approach, the results that are needed to solve the problem of waste management can be obtained. The master’s thesis lists the laws related to waste management, the methods used by other countries in Europe and methods for the municipal waste composition analysis used by Croatia is more described in detail. Finally, a research part of the master’s thesis was done. Analysis of the household waste composition was done. Results were compared with the results of the Republic of Croatia, and conclusions were made on that basis.