Through bloc membership
Least Developed Countries: Afghanistan, Angola, Bangladesh, Benin, Burkina Faso, Burundi, Cambodia, Central African Republic, Chad, Comoros, Democratic Republic of Congo, Djibouti, Eritrea, Ethiopia, Gambia, Guinea-Bissau, Haiti, Kiribati, Laos, Lesotho, Liberia, Madagascar, Malawi, Mali, Mauritania, Mozambique, Myanmar, Nepal, Niger, Rwanda, Sao Tome & Principe, Senegal, Sierra Leone, Solomon Islands, Somalia, South Sudan, Sudan, Tanzania, Timor-Leste, Togo, Tuvalu, Uganda, Yemen, Zambia (45 states)
Alliance of Small Island States: Antigua & Barbuda, Bahamas, Barbados, Belize, Cape Verde, Comoros, Cook Islands, Cuba, Dominica, Dominican Republic, Fiji, Grenada, Guinea-Bissau, Guyana, Haiti, Jamaica, Kiribati, Maldives, Republic of the Marshall Islands, Mauritius , Federated States of Micronesia, Nauru, Niue, Palau, Papua New Guinea, St. Kitts & Nevis, Saint Lucia, Saint Vincent & the Grenadines, Samoa, Sao Tome & Principe, Seychelles, Singapore, Solomon Islands, Suriname, Timor-Leste , Tonga, Trinidad & Tobago, Tuvalu, Vanuatu (39 states)
Vulnerable Climate Forum: Afghanistan, Bangladesh, Barbados, Benin, Bhutan, Burkina Faso, Cambodia, Chad, Colombia, Comoros, Costa Rica, Ivory Coast, Democratic Republic of Congo, Dominican Republic, Swaziland, Ethiopia, Fiji, Gambia, Ghana, Grenada, Guatemala, Guinea , Guyana, Haiti, Honduras, Kenya, Kiribati, Kyrgyzstan, Lebanon, Liberia, Madagascar, Malawi, Maldives, Mongolia, Morocco, Nepal, Nicaragua, Niger, Palau, Palestine, Papua New Guinea, Philippines, Rwanda, Saint Lucia, Samoa, Senegal, Sri Lanka, South Sudan, Sudan, Tanzania, Timor-Leste, Tunisia, Tuvalu, Uganda, Vanuatu, Vietnam, Yemen (58 states)
By area
Africa and the Middle East: Angola, Benin, Burkina Faso, Burundi, Cape Verde, Central African Republic, Chad, Comoros, Ivory Coast, Democratic Republic of Congo, Djibouti, Eritrea, Swaziland, Ethiopia, Gambia, Ghana, Guinea, Guinea-Bissau, Kenya, Lebanon, Lesotho, Liberia, Madagascar, Malawi, Mali, Mauritania, Mauritius, Morocco, Mozambique, Niger, Palestine, Rwanda, Sao Tome & Principe, Senegal, Seychelles, Sierra Leone, Somalia, South Sudan, Sudan, Tanzania, Togo, Tunisia, Uganda , Yemen, Zambia (45 states)
Asia-Pacific: Afghanistan, Bangladesh, Bhutan, Cambodia, Cook Islands, Fiji, Kiribati, Kyrgyzstan, Laos, Maldives, Federated States of Micronesia, Mongolia, Myanmar, Nauru, Nepal, Niue, Palau, Papua New Guinea, Philippines, Samoa, Singapore, Solomon Islands , Sri Lanka, Timor-Leste, Tonga, Tuvalu, Vanuatu, Vietnam (29 states)
Latin America and the Caribbean: Antigua & Barbuda, Bahamas, Barbados, Belize, Colombia, Costa Rica, Cuba, Dominica, Dominican Republic, Grenada, Guatemala, Guyana, Haiti, Honduras, Jamaica, Nicaragua, Saint Kitts & Nevis, Saint Lucia, Saint Vincent and the Grenadines, Suriname, Trinidad and Tobago (21 states)
Countries have been excluded on account of lacking knowledge
Cook Islands, Republic of the Marshall Islands, Federated States of Micronesia, Niue, Palau, Palestine, Tuvalu (7 states)