The purpose of this study is to thoroughly examine the concept and significance of corruption in the European Union from an ethical standpoint and analyse statistical data on the level of corruption and attitudes towards it, using the example of Italy, Greece and Latvia. For effective research on the subject, it is important to use the hermeneutical method and quantitative analysis. The study considers corruption and ethics, identifies the essence, their concept and content, and demonstrates the connection between them. The analysis of an international regulatory act related to the fight against corruption is conducted and, based on this analysis, the forms of corruption are determined. The influence of corruption on society and various spheres of state government, both in general, in the international arena (and directly within the European Union), and on the example of individual states (Italy, Greece and Latvia) is established. The level of corruption is analysed in accordance with the Corruption Perceptions Index Transparency International, and the best and worst indicators among the member states of the European Union are highlighted. As a result of the study, the most thorough definitions of the concepts of ethics and corruption are provided, the relationship between these concepts is demonstrated, and statistical data on the level of corruption in the world’s countries (in particular, in relation to the selected states) are established. Changes in the perception of the level of corruption in 27 European Union states from 2012 to 2023 are also analysed. This study emphasizes the importance of compliance with ethical behaviour by representatives of the civil service and enterprises. The specific problem of employees exceeding their powers, which leads to public disbelief in the effectiveness of the government of their state, is also noted. In addition, the study showed that focusing on ethical issues can substantially contribute to preventing and combating corruption.