In order to successfully identify all stakeholders, it is necessary to make an depth analysis of all stakeholders. Stakeholder analysis is a technique of systematic collection and analysis of quantitative and qualitative information in order to determine whose interests should be taken into account during the project implementation. This analysis is used to identify the interests, expectations and influence of stakeholders and to link them to the purpose of the project. Through the analysis of stakeholders, the links between stakeholders and the project can be identified, as well as the links between the stakeholders themselves, which can be used to build coalitions and potential partnerships that contribute to more successful project implementation. Each stakeholder group will have their own view of the project's success, judging it according to different criteria. Many authors emphasize the subjective and perspective nature of project evaluation, and that the perception of outcomes depends on the perspective or point of view of stakeholders. Given that the project has a number of stakeholder groups, each with a specific point of view, individuals or groups are likely to differ in their assessments of the extent to which the project is successful. The aim of this thesis is to analyze interest groups and their perception of project success.The topic is dealt with through the theoretical and empirical part. The empirical part presents an example of a successful project entitled "Traveling living room for the elderly" implemented by the City of Pleternica in partnership with the Croatian Women's Society Pleternica, Association Ždralice Daruvar and Association Most 352 Oriovac, which improves the quality of life of the elderly and increases their social inclusion. An analysis of stakeholders was made, a survey on project implementation was conducted, and the perception of stakeholders on project success was investigated. The initiator, employees, suppliers and other associates have recognized their roles and successfully perform work tasks, which can be seen through the process of using the product or project. Beneficiaries and their families enjoy enjoying the benefits that come with the project, so it can be concluded that this is an extremely successful project that serves the benefit of the whole community.