The objectives of this guide are: 1. to explain what origin-linked quality and the GI concept are; 2. to raise awareness regarding the potential of origin-linked products for rural development and conditions for sustainability; 3. to facilitate implementation of GI processes at local level by providing tools and a concrete methodology. Based on multidisciplinary research and empirical evidence from all over the world, this guide is intended for practitioners, rural development specialists from the public or private sectors, representatives of value chains, policy makers, rural community leaders and trainers. It is intended more particularly for those involved in the development of agricultural and food systems who have an interest in promoting and preserving local food products and resources (traditions, know-how and natural resources) within a perspective of rural development. The role of these facilitators is of paramount importance in helping local stakeholders to become aware of the potential of originlinked products, organize themselves and carry out collective actions, understand the importance of appropriate rules and pilot the GI system towards economic, sociocultural and environmental sustainability. This practical guide avoids prescriptive or normative solutions, instead offering an approach that provides step-by-step answers to the main questions facing development actors seeking to identify, define and protect products of origin-linked quality through the adoption of various measures allowing their sustainable development.