The book is dedicated to the implementation of the UN Principles of Effective Governance for Sustainable Development, agreed at CEPA 17 and endorsed by the UN Economic and Social Council (ECOSOC) in July 2018 in the Post-Soviet countries. The principles are intended to help interested countries to build, on a voluntary basis, effective, accountable and inclusive institutions at all levels, in the context of the 2030 Agenda for Sustainable Development. The research analyses strategies and road maps, legislation and administrative practices in Armenia, Azerbaijan, Belarus, Kazakhstan, Kyrgyzstan, Moldova, Russia, Tajikistan, Ukraine and Uzbekistan. The authors of the country reports are leading governance experts in the relevant regions. The scope of the research is new and quite extensive since it is the first time the data on effective governance has been aggregated and grouped on a regional basis for these countries. The results of the research were presented during the 21st Session of the UN Committee of Experts on Public Administration and reflected in the final resolutions and working papers of the organization. Key words: public administration; sustainable development; efficient governance; united nations; reforms; Post-Soviet countries.