MEAs to which Countries are Members (current names: e.g., Czechia, Eswatini, North Macedonia)

Greenland
Niue
Abkhazia
Grenada
North Macedonia
Afghanistan
Guam
Norway
Agreement
Guatemala
Norway (pre-1905)
Albania
Guinea
Oman
Algeria
Guinea-Bissau
Organisation of Eastern Caribbean States
Andorra
Guyana
Pacific Islands, Trust Territory
Angola
Haiti
Pakistan
Antigua and Barbuda
Holy See
Palau
Argentina
Honduras
Palestine, Occupied Territories
Armenia
Hong Kong
Panama
Aruba
Hungary
Papua New Guinea
Australia
Iceland
Paraguay
Austria
Iceland (pre-1944)
Peru
Austria-Hungary
India
Philippines
Azerbaijan
India (pre-1947)
Poland
Bahamas
Indochina
Poland (Danzig)
Bahrain
Indonesia
Portugal
Bangladesh
IO-African Intellectual Property Organization
Prussia
Barbados
IO-Birdlife International
Qatar
Belarus
IO-Comprehensive Nuclear-Test-Ban Treaty Organisation
Qatar (pre-1971)
Belarus (Soviet period)
IO-EUMETSAT
Romania
Belgium
IO-European Atomic Energy Community
Russia (pre-1917)
Belgium (Brussels)
IO-European Bank for Reconstruction and Development (EBRD)
Russian Federation
Belgium (Flemish)
IO-European Space Agency
Rwanda
Belgium (Walloon)
IO-Eutelsat
Sahrawi Arab Democratic Republic
Belize
IO-IAEA
Saint Helena
Benin
IO-International Bank for Reconstruction and Development
Saint Kitts and Nevis
Bermuda
IO-International Epizootic Bureau
Saint Lucia
Bhutan
IO-IUCN/SSC
Saint Martin
Bolivia
IO-Nordic Environment Finance Corporation (NEFCO)
Saint Vincent and the Grenadines
Bophutatswana
IO-UN Food and Agriculture Organization
Samoa
Bosnia and Herzegovina
IO-UNEP/CMS Secretariat
San Marino
Botswana
IO-World Health Organization
Sao Tome and Principe
Brazil
IO-World Meteorological Organization
Saudi Arabia
British Virgin Islands
Iran
Saudi Arabia (pre-1927)
Brunei Darussalam
Iraq
Senegal
Bulgaria
Iraq (pre-1932)
Serbia
Burkina Faso
Ireland
Serbia (pre-1992)
Burundi
Israel
Seychelles
Cambodia
Italy
Sierra Leone
Cambodia (pre-1953)
Jamaica
Singapore
Cameroon
Japan
Slovakia
Canada
Jordan
Slovenia
Cape Verde
Kazakhstan
Solomon Islands
Central African Republic
Kenya
Somalia
Central African Republic (pre-1960)
Kenya (pre-1963)
South Africa
Chad
Kiribati
South Ossetia
Chad (pre-1960)
Korea, Democratic People's Republic
South Sudan
Chile
Korea, Republic of
Spain
China
Kosovo
Sri Lanka
Ciskei
Kuwait
Sudan
Colombia
Kyrgyzstan
Sudan (pre-1956)
Comoros
Laos
Suriname
Congo, Democratic Republic of
Latvia
Suriname (pre-1975)
Congo, Democratic Republic of (pre-1960)
Latvia (pre-1940)
Sweden
Congo, Republic of the
Lebanon
Sweden (pre-1905)
Congo, Republic of the (pre-1960)
Lesotho
Switzerland
Cook Islands
Liberia
Syria
Costa Rica
Libya
Syria (pre-1961)
Cote d'Ivoire
Liechtenstein
Taiwan
Croatia
Lithuania
Tajikistan
Croatia (pre-1991)
Lithuania (pre-1940)
Tanzania
Cuba
Luxembourg
Thailand
Curacao
Macao
Timor-Leste
Cyprus
Madagascar
Togo
Czechia
Malawi
Tokelau
Denmark
Malaysia
Tonga
Djibouti
Maldives
Transkei
Dominica
Mali
Trinidad and Tobago
Dominican Republic
Malta
Tunisia
Ecuador
Marshall Islands
Tunisia (pre-1956)
Egypt
Marshall Islands (pre-1986)
Turkey (pre-1923)
El Salvador
Mauritania
Türkiye
Equatorial Guinea
Mauritania (pre-1960)
Turkmenistan
Eritrea
Mauritius
Turks and Caicos Islands
Estonia
Mexico
Tuvalu
Estonia (pre-1940)
Micronesia
Uganda
Estonia (Soviet period)
Micronesia (pre-1986)
Uganda (pre-1962)
Eswatini
Moldova
Ukraine
Ethiopia
Monaco
Ukraine (Soviet period)
European Union
Mongolia
United Arab Emirates
Faeroe Islands
Montenegro
United Kingdom
Falkland Islands (Malvinas)
Montserrat
United States
Fiji
Morocco
Uruguay
Finland
Morocco (pre-1956)
Uzbekistan
France
Mozambique
Vanuatu
Gabon
Mozambique (pre-1975)
Venda
Gabon (pre-1960)
Myanmar
Venezuela
Gambia
Myanmar (pre-1948)
Viet Nam
Georgia
Namibia
Viet Nam (pre-1954)
Germany
Namibia (pre-1990)
Vietnam, South
Germany (Alsace-Lorraine)
Nauru
Yemen
Germany (Baden)
Nepal
Yemen (pre-1962)
Germany (Baden-Wurttemberg)
Netherlands
Yemen, Arab Republic
Germany (Bavaria)
Netherlands Antilles
Yemen, Democratic
Germany (Hesse)
New Caledonia
Yugoslavia
Germany (pre-1949)
New Zealand
Yugoslavia (1918-1943)
Germany (Wurttemberg)
Nicaragua
Zambia
Germany, Former GDR
Niger
Zimbabwe
Ghana
Niger (pre-1960)
Zimbabwe (pre-1965)
Greece
Nigeria