The North American Olive Oil Association, a nonprofit trade group of olive oil marketers in North America, offers a wealth of helpful information, including this useful “Resources and Links” page.
The International Olive Council, “the world’s only international intergovernmental organisation in the field of olive oil and table olives … was set up in Madrid, Spain, in 1959, under the auspices of the United Nations.” Its website provides a variety of information. For example, this 2-minute video highlights "the fundamental role played by olive trees as a sustainable crop that contributes to the fight against climate change."
The American-Hellenic Chamber of Commerce “strives for continuous improvement of American-Hellenic commercial and financial relations, through increased membership and through the organization of top-quality events, exhibitions, fora, seminars, and congresses on both sides of the Atlantic.”
Enterprise Greece "is the official agency of the Greek State, under the auspices of the Ministry of Foreign Affairs, to promote investment in Greece, exports from Greece, and make Greece more attractive as an international business partner."
The Panhellenic Exporters’ Association aims “to promote the interests of exporting enterprises; to bolster export activity; to assist all interested parties abroad in familiarising themselves with Greek export production and in finding the products they are looking for and the people or companies who sell them.”