This technical note aims to provide United Nations Country Teams (UNCTs) in the Europe and Central Asia (ECA) region with a common understanding of sustainable food systems. This technical note is an additional resource for UNCTs and complements existing guidance for United Nations Common Country Analyses (CCAs) and United Nations Sustainable Development Cooperation Frameworks (UNSDCFs), such as the UNSDCF Guidance and UNSDCF Companion Package.