This open access book focuses on an issue only marginally tackled by this literature the still existing gap between adaptation science and modelling and the possibility to effectively access and exploit the information produced by policy making at different levels international national and local. To do so the book presents the proceedings of a highlevel expert workshop on adaptation modelling integrated with main results from the Study on Adaptation Modelling SAMPS commissioned by the European Commissions DirectorateGeneral for Climate Action DG CLIMA and implemented by the CMCC Foundation EuroMediterranean Centre on Climate Change in collaboration with the Institute for Environmental Studies IVM Deltares and Paul Watkiss Associates PWA.What is the latest development in adaptation modelling Which tools and information are available for adaptation assessment How much are they practically usable by the policy community How their uptake by practitioners can be improved What are the major research gaps in adaptation modelling that needs to be covered in the next future How This book addresses these questions presenting the results of a study on adaptation modelling commissioned by the European Commissions DirectorateGeneral for Climate Action DG CLIMA enriched by the outcomes of a highlevel expert workshop on adaptation also part of the research. This book aspires to provide a useful support to academics policy makers and practitioners in the field of adaptation to orient them in the expanding adaptation modelling assessment literature and suggest practical ways for its application.