PCCI cooperates with European and international organizations and institutions aiming at informing and promoting positions serving the interests of Greek enterprises. Referentially:
Since 1982, PCCI has been one of the founding members of the Association of the Mediterranean Chambers of Commerce and Industry - ASCAME - and is still actively involved. ASCAME plays a prominent role in the field of international cooperations and is recognized by the most important European and international institutions.
PCCI participates, with one representative, in the Greek Committee of the International Chamber of Commerce - ICC - , which has a membership of thousands of enterprises and trade associations active in over 130 countries.
It is a member of the Network of the Insular Chambers of Commerce and Industry of the European Union (INSULEUR) which generally aims at the economic development of the islands of the European Union.
As part of its development and openness, PPCI has signed memorandums of understanding of mutual utility with the Ukrainian Chamber, the Greek-Russian Chamber of Commerce, the Hellenic-American Chamber of Commerce and the Chamber of Kosovo. Moreover, it participates with one representative in the Board of Directors of the Hellenic-Chinese Chamber and in the Board of Directors of the Arab-Greek Chamber.