The below is an alphabetically ordered listing of all Major Groups organizations that have contributed to this website and the overall Rio+20 preparatory process. Click on the links for further information on each organization.

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• Arab Network for Environment and Development (RAED)
• Boticário Group Foundation
• ECA Watch Austria
• Environmental Compliance Office And Sustainable Development Federation of Egyptian Industries
• Inter-American Bar Association
• International Cryosphere Climate Initiative (ICCI)
• International Solid Waste Association
• International Youth and Student Movement for the United Nations (ISMUN)
• Interstate Sustainable Development Commission of Central Asia (ISDC)
• Montes del Plata Company
• 1st UNESCAP Subregional Forum for Youth Participation in Policy-Making for East and North-East Asia
• 2011 Youth Delegates to the United Nations
• 21st Century Clusters
• 350.org
• 50+20 Management Education for the World
• 77 civil society organisations on the Importance of Access to Information and a Free Media to Sustainable Development
• A Seed Japan
• Abu Dhabi Global Data Initiative (AGEDI)
• Academy for Future Science
• Access Initiative
• ActionAid International
• Active Remedy Ltd
• ACV Brasil
• Advisory Group on International Environmental Governance (The UNEP Major Groups and Stakeholders)
• Advocates for Youth