Abstract: The author of the article analyzes participation of prosecutor in administrative court proceedings. In her article Bezrukavaya discusses the views of leading academics regarding the subject of prosecutor's supervision. She differentiates between the subject of prosecutor's supervision and the subject of prosecutor participation in court proceedings, defines general and special components of the subject of relevant prosecutor's activity, and touches upon particular features of the subject of prosecutor's participation in individual categories of administrative proceedings as well as that at different stages of court proceedings. The author also gives a list of means of prosecutor's response to violations that may be discovered in the course of proceedings. The research is based on the dialectical research method, and the author also applies the following methods: systems analysis, logical analysis, comparative law analysis. The novelty of the research is caused by the fact that for the first time in the academic literature Bezrykavaya defines the subject of prosecutor's participation in administrative proceedings and defines general and special components thereof. For the first time in the academic literature the author also offers a list of prosecutor's responses to violations that may be discovered during proceedings. As a conclusion, the author emphasizes the theoretical and practical importance of defining the subject of relevant prosecutor's activity and underlines the need to apply means of prosecutor's responses described herein.