Stakeholder mapping and analysis is essential in Climate Change Adaptation (CCA) projects to assess and identify the needs of stakeholders (SHs). For the mapping of actors involved in adaptation planning and implementation in Greece, a multi-criteria analysis is followed. The SHs involved in CCA in Greece were divided into national and regional level stakeholders. The stakeholder analysis was based on the mapping of SHs identified through the organizational charts of relevant institutions and by other projects with a direct or indirect link to CCA. The relative importance of each stakeholder for the purposes of this analysis was assessed by evaluating their Power, Proximity and Urgency with respect to CCA and assigning specific weighting factors for each criterion, to calculate a single Priority Index. Based on the Priority Index value, SHs were classified as low, medium and high priority for CCA both at the national and regional level. At the national level, ministerial directorates are assessed as high priority, followed by academic and research centers as medium priority. At the regional level, high index values were calculated for the Special Directorate of Environment and Spatial Planning. The General Directorate of Civil Protection and Directorate of European Programs are assessed as medium and low priority respectively.