The Joint Master’s Program TESI aims to develop and promote the culture, design, management, governance, and evaluation of a social innovation approach in the social policies of the Adriatic-Ionian region. The project involves six universities and one research center from six Adrion countries (Italy, Croatia, Greece, Albania, Serbia, and Slovenia), with the support of the University of San Marino as an associated Partner. The Joint Master’s Program TESI intends to train the professional role of the “social innovator” expert capable of designing, implementing, promoting, and evaluating innovative tools and interventions to support public administrations, Third Sector organizations, and private sector actors in the Adriatic-Ionian area in their activities to respond to and combat contemporary social challenges. This highly qualified expert must be capable of understanding and responding adequately to the needs of the area in which he/she operates, considering socio-economic, cultural, environmental, and institutional aspects. The trained figure will be able to work within a multi-stakeholder territorial governance, with a managerial role, placing him/herself within public administrations, Third Sector organizations, and private enterprises, where he/she will plan innovative social interventions and realize synergies between the actors involved, responding to the needs of the community. Ultimately, they will be able to monitor and assess the social impact of the measures and strategies implemented. The project is co-funded by the European Union through the Interreg IPA ADRION programme.