The Consultative Group of Experts conducted three regional hands-on training workshops in 2019 on institutionalization of data management for the national greenhouse gas inventory. The aim of the workshops was to enhance the technical capacity of national experts involved in the preparation of national communications, biennial update reports and national greenhouse gas inventories so as to institutionalize data management in national institutional arrangements. They also served as a platform for exchanging views, lessons learned and experience relating to institutional arrangements for data collection and data management processes, including commonly used techniques, approaches and tools. This report outlines the proceedings of the workshops and summarizes the discussions that took place.