The first chapter of the descriptive section of the Doctoral Thesis “Public Procurement Control Mechanism in Lithuania� reveals the concept of public and legal regulation of the public procurement, analyses the development of the public regulation in the EU and Lithuania. The chapter also introduces the content of the public procurement principles and objectives, and the efficiency of their implementation by the means of the public procurement control. The second chapter of the descriptive section explores the institutional system of the public procurement control; it is compared to the examples of the neighbouring countries Latvia and Estonia, it also aims to assess the disfunctions of the public procurement control and potential directions for its improvement; the chapter contains an empirical research analysis as well. The third chapter of the descriptive section introduces to the public procurement mechanism suggested by the author along with the settlement of the public procurement disputes in a mandatory pre-litigation procedure. The final section of the Thesis provides with conclusions and recommendations aimed at the improvement of the existing regulatory framework of the public procurement being applied in the Republic of Lithuania to ensure an efficient implementation of the public procurement objectives. A particular focus is made on legislation and draft regulations necessary to implement the mechanism of the new settlement of the public procurement disputes in a mandatory pre-litigation procedure.