This report summarizes the findings emerging from a pilot initiative led by the United Nations Development Programme (UNDP), in collaboration with the Open Government Partnership (OGP) and with financial support from the United States Agency for International Development (USAID), from November 2016 to July 2017, to support inclusive processes and methodologies for monitoring SDG16 in six countries: El Salvador, Georgia, Indonesia, South Africa, Tunisia and Uruguay. Additionally, this report presents information from Mexico, which was not part of the pilot initiative but simultaneously developed a similar methodology in coordination with these countries. The report will be useful to anyone interested in knowing more about the various approaches adopted by participating governments to monitor SDG16 in collaboration with non-governmental actors, the main challenges they faced in doing so and lessons learned from their experiences. It is hoped that the multi-stakeholder monitoring approaches adopted by the participating countries, which are reviewed in this report, will be instructive in other contexts as more countries prepare to report in the HighLevel Political Forum on Sustainable Development.