The University of Piraeus is a member in the following international organizations and networks:

• EUROPEAN UNIVERSITIES ASSOCIATION
• COMMUNITY OF MEDITERRANEAN UNIVERSITIES
• IAU INTERNATIONAL ASSOCIATION OF UNIVERSITIES
• ASSOCIATION OF ECONOMIC UNIVERSITIES OF SOUTH AND EASTERN EUROPE AND THE BLACK SEA
• EUROPEAN ASSOCIATION ERASMUS COORDINATORS
• MEDITERRANEAN UNIVERSITIES UNION
• TETHYS- EUROMEDITERRANEAN NETWORK UNIVERSITIES
• EUROPEAN OFFICE OF CYPRUS