Hierarchical organization, hierarchical structure as applied to all organizations, including religions
World Health Organization | International Organization for Standardization | World Trade Organization | World Intellectual Property Organization | International Labour Organization | Food and Agriculture Organization | Charitable organization | International Civil Aviation Organization | World Meteorological Organization | United Nations Industrial Development Organization | International Maritime Organization | Interpol (organization) | Organization for Security and Co-operation in Europe | Organization of American States | non-governmental organization | National Organization for Women | World Boxing Organization | Non-governmental organization | World Zionist Organization | charitable organization | National FFA Organization | Students for a Democratic Society (1960 organization) | Red Hot Organization | Pan American Health Organization | organization | nonprofit organization | Palestine Liberation Organization | World Organization of the Scout Movement | Economic Cooperation Organization | Young Presidents' Organization |