Organization for Economic Cooperation and Development (OECD) The OECD is a group of 30 member countries who discuss and develop economic and social policy. Investopedia Says: The OECD has been called a think tank, monitoring agency, rich man's club, and unacademic university. Whatever you want to call it, the OECD has a lot of power, as the member nations account for two thirds of the worlds goods and services. Related Terms: Basel I Globalization National Treatment World Trade Organization - WTO |