France, Germany, Japan, United Kingdom, United States

Group of 7 (G-7)

Canada, France, Germany, Italy, Japan, United Kingdom, United States

Group of 8 (G-8)

Canada, France, Germany, Italy, Japan, Russia, United Kingdom, United States

Group of 10 (G-10)

Belgium, Canada, France, Germany, Italy, Japan, Netherlands, Sweden, Switzerland, United Kingdom, United States.
Observers: Bank for International Settlements (BIS), European Union (EU), International Monetary Fund (IMF), and the Organisation for Economic Co-operation and Development (OECD)

Group of 11 (G-11) - also known as the Cartegena Group

Argentina, Bolivia, Brazil, Chile, Colombia, Dominican Republic, Ecuador, Mexico, Peru, Uruguay, Venezuela

Group of 20 (G-20)

Argentina, Australia, Brazil, Canada, China, France, Germany, India, Indonesia, Italy, Japan, Korea, Mexico, Russia, Saudi Arabia, South Africa, Turkey, United Kingdom, United States, the European Union and the Bretton Woods Institutions

Group of 24 (G-24)

Algeria, Argentina, Brazil, Colombia, Democratic Republic of the Congo, Côte d'Ivoire, Egypt, Ethiopia, Gabon, Ghana, Guatemala, India, Islamic Republic of Iran, Lebanon, Mexico, Nigeria, Pakistan, Peru, Philippines, Serbia and Montenegro*, Sri Lanka, Syrian Arab Republic, Trinidad and Tobago, Venezuela

* No decision has yet been taken regarding representation for Serbia and Montenegro at meetings of the G-24

Group of 77 (G-77)

Islamic State of Afghanistan, Algeria, Angola, Antigua and Barbuda, Argentina, The Bahamas, Bahrain, Bangladesh, Barbados, Belize, Benin, Bhutan, Bolivia, Bosnia and Herzegovina, Botswana, Brazil, Brunei Darussalem, Burkina Faso, Burundi, Cambodia, Cameroon, Cape Verde, Central African Republic, Chad, Chile, China, Colombia, Comoros, Democratic Republic of the Congo, Republic of the Congo, Costa Rica, Côte d'Ivoire, Cuba, Cyprus, Djibouti, Dominica, Dominican Republic, Ecuador, Egypt, El Salvador, Equatorial Guinea, Ethiopia, Fiji, Gabon, The Gambia, Ghana, Grenada, Guatemala, Guinea, Guinea-Bissau, Guyana, Haiti, Honduras, India, Indonesia, Islamic Republic of Iran, Iraq, Jamaica, Jordan, Kenya, Democratic People's Republic of Korea, Republic of Korea, Kuwait, Lao People's Democratic Republic, Lebanon, Lesotho, Liberia, Libya, Madagascar, Malawi, Malaysia, Maldives, Mali, Malta, Marshall Islands, Mauritania, Mauritius, Federated States of Micronesia, Mongolia, Morocco, Mozambique, Myanmar, Namibia, Nepal, Nicaragua, Niger, Nigeria, Oman, Pakistan, Panama, Papua New Guinea, Paraguay, Peru, Philippines, Qatar, Romania, Rwanda, St. Kitts and Nevis, St. Lucia, St. Vincent and the Grenadines, Samoa, São Tomé and Príncipe, Saudi Arabia, Senegal, Serbia and Montenegro, Seychelles, Sierra Leone, Singapore, Solomon Islands, Somalia, South Africa, Sri Lanka, Sudan, Suriname, Swaziland, Syrian Arab Republic, Tanzania, Thailand, Togo, Tonga, Trinidad and Tobago, Tunisia, Uganda, United Arab Emirates, Uruguay, Vanuatu, Venezuela, Vietnam, Republic of Yemen, Zambia, Zimbabwe; Palestine Liberation Organization (PLO)