The TeRRIFICA Guide on engagement and co-creation aims at fostering stakeholders’ engagement and co-creation within the context of climate mitigation & adaptation. This guide provides some (non-)prescriptive ideas, recommendations & methodologies. They are a “starting point” to help stakeholder engagement & co-creation processes within climate change policymaking in the pilot regions. It disseminates “good practices”, i.e. some methodologies and experimentations that may be transferable to other regions in Europe.