Healthy wetlands are acknowledged for being among the most effective sinks for carbon and for providing other valuable ecosystem services. In contrast, human-impacted wetlands represent a major source of greenhouse gases (GHG). Important research questions on the GHG abatement potential of wetland restoration and on management and restoration actions to maintain and promote the mitigation and adaptation capacity of European wetlands are still to be answered due to major data and knowledge gaps. The RESTORE4Cs project (a 3-year Research and Innovation Action funded by the EU) aims to fill this gap by assessing the role of restoration action in wetlands climate change mitigation capacity and for the provision of a wide range of ecosystem services using an integrative socio-ecological systems approach.