| Country | Joined | IFC Region1 |
| A-C |  |  |
| Afghanistan | 1957 | Middle East and North Africa |
| Albania | 1991 | Europe and Central Asia |
| Algeria | 1990 | Middle East and North Africa |
| Angola | 1989 | Sub-Saharan Africa |
| Antigua and Barbuda | 1987 | Latin America and the Caribbean |
| Argentina | 1959 | Latin America and the Caribbean |
| Armenia | 1995 | Europe and Central Asia |
| Australia2 | 1955 | — |
| Austria2 | 1955 | — |
| Azerbaijan | 1995 | Europe and Central Asia |
 |  |  |
| Bahamas, The | 1986 | Latin America and the Caribbean |
| Bahrain | 1995 | Middle East and North Africa |
| Bangladesh | 1976 | South Asia |
| Barbados | 1980 | Latin America and the Caribbean |
| Belarus | 1992 | Europe and Central Asia |
| Belgium | 1956 | Donor |
| Belize | 1982 | Latin America and the Caribbean |
| Benin | 1987 | Sub-Saharan Africa |
| Bhutan | 2003 | South Asia |
| Bolivia | 1956 | Latin America and the Caribbean |
| Bosnia and Herzegovina | 1996 | Europe and Central Asia |
| Botswana | 1979 | Sub-Saharan Africa |
| Brazil | 1956 | Latin America and the Caribbean |
| Bulgaria | 1991 | Europe and Central Asia |
| Burkina Faso | 1975 | Sub-Saharan Africa |
| Burundi | 1979 | Sub-Saharan Africa |
 |  |  |
| Cambodia | 1997 | East Asia and the Pacific |
| Cameroon | 1974 | Sub-Saharan Africa |
| Canada2 | 1955 | — |
| Cape Verde | 1990 | Sub-Saharan Africa |
| Central African Rep. | 1991 | Sub-Saharan Africa |
| Chad | 1998 | Sub-Saharan Africa |
| Chile | 1955 | Latin America and the Caribbean |
| China | 1969 | East Asia and the Pacific |
| Colombia | 1955 | Latin America and the Caribbean |
| Comoros | 1992 | Sub-Saharan Africa |
| Congo, Democratic Republic | 1970 | Sub-Saharan Africa |
| Congo, Republic of | 1980 | Sub-Saharan Africa |
| Costa Rica | 1955 | Latin America and the Caribbean |
| Côte d'Ivoire | 1963 | Sub-Saharan Africa |
| Croatia | 1993 | Europe and Central Asia |
| Cyprus2 | 1962 | — |
| Czech Republic | 1993 | Europe and Central Asia |
| D-F |  |  |
| Denmark2 | 1956 | — |
| Djibouti | 1980 | Sub-Saharan Africa |
| Dominica | 1980 | Latin America and the Caribbean |
| Dominican Republic3 | 1961 | Latin America and the Caribbean |
 |  |  |
| Ecuador | 1955 | Latin America and the Caribbean |
| Egypt, Arab Rep. of | 1955 | Middle East and North Africa |
| El Salvador | 1956 | Latin America and the Caribbean |
| Equatorial Guinea | 1992 | Sub-Saharan Africa |
| Eritrea | 1995 | Sub-Saharan Africa |
| Estonia | 1993 | Europe and Central Asia |
| Ethiopia | 1956 | Sub-Saharan Africa |
 |  |  |
| Fiji | 1979 | East Asia and the Pacific |
| Finland2 | 1956 | — |
| France2 | 1956 | — |
| G-H |  |  |
| Gabon | 1970 | Sub-Saharan Africa |
| Gambia, The | 1983 | Sub-Saharan Africa |
| Georgia | 1995 | Europe and Central Asia |
| Germany2 | 1956 | — |
| Ghana | 1958 | Sub-Saharan Africa |
| Greece2 | 1955 | — |
| Grenada | 1975 | Latin America and the Caribbean |
| Guatemala | 1955 | Latin America and the Caribbean |
| Guinea | 1982 | Sub-Saharan Africa |
| Guinea-Bissau | 1977 | Sub-Saharan Africa |
| Guyana | 1967 | Latin America and the Caribbean |
 |  |  |
| Haiti | 1955 | Latin America and the Caribbean |
| Honduras | 1955 | Latin America and the Caribbean |
| Hungary | 1985 | Europe and Central Asia |
| I-K |  |  |
| Iceland2 | 1955 | — |
| India | 1955 | South Asia |
| Indonesia4 | 1968 | East Asia and the Pacific |
| Iran, Islamic Rep. of | 1956 | Middle East and North Africa |
| Iraq | 1956 | Middle East and North Africa |
| Ireland2 | 1958 | — |
| Israel2 | 1956 | — |
| Italy2 | 1956 | — |
 |  |  |
| Jamaica | 1964 | Latin America and the Caribbean |
| Japan2 | 1956 | — |
| Jordan | 1956 | Middle East and North Africa |
 |  |  |
| Kazakhstan | 1993 | Europe and Central Asia |
| Kenya | 1964 | Sub-Saharan Africa |
| Kiribati | 1986 | East Asia and the Pacific |
| Korea, Republic of | 1964 | East Asia and the Pacific |
| Kuwait | 1962 | Middle East and North Africa |
| Kyrgyz Republic | 1993 | Europe and Central Asia |
| L-M |  |  |
| Lao PDR | 1992 | East Asia and the Pacific |
| Latvia | 1993 | Europe and Central Asia |
| Lebanon | 1956 | Middle East and North Africa |
| Lesotho | 1972 | Sub-Saharan Africa |
| Liberia | 1962 | Sub-Saharan Africa |
| Libya | 1958 | Middle East and North Africa |
| Lithuania | 1993 | Europe and Central Asia |
| Luxembourg2 | 1956 | — |
 |  |  |
| Macedonia, FYR of | 1993 | Europe and Central Asia |
| Madagascar | 1963 | Sub-Saharan Africa |
| Malawi | 1965 | Sub-Saharan Africa |
| Malaysia | 1958 | East Asia and the Pacific |
| Maldives | 1983 | South Asia |
| Mali | 1978 | Sub-Saharan Africa |
| Malta | 2005 | Europe and Central Asia |
| Marshall Islands | 1992 | East Asia and the Pacific |
| Mauritania | 1967 | Sub-Saharan Africa |
| Mauritius | 1968 | Sub-Saharan Africa |
| Mexico | 1955 | Latin America and the Caribbean |
| Micronesia, Fed. States of | 1993 | East Asia and the Pacific |
| Moldova | 1995 | Europe and Central Asia |
| Mongolia | 1991 | East Asia and the Pacific |
| Montenegro | 2007 | Europe and Central Asia |
| Morocco | 1962 | Middle East and North Africa |
| Mozambique | 1984 | Sub-Saharan Africa |
| Myanmar | 1956 | East Asia and the Pacific |
| N-R |  |  |
| Namibia | 1990 | Sub-Saharan Africa |
| Nepal | 1966 | South Asia |
| Netherlands2 | 1955 | — |
| New Zealand2 | 1961 | — |
| Nicaragua | 1955 | Latin America and the Caribbean |
| Niger | 1979 | Sub-Saharan Africa |
| Nigeria | 1961 | Sub-Saharan Africa |
| Norway2 | 1956 | — |
| Oman | 1973 | Middle East and North Africa |
| Qatar | 2008 | Middle East and North Africa |
 |  |  |
| Pakistan | 1955 | Middle East and North Africa |
| Palau | 1997 | East Asia and the Pacific |
| Panama | 1955 | Latin America and the Caribbean |
| Papua New Guinea | 1975 | East Asia and the Pacific |
| Paraguay | 1955 | Latin America and the Caribbean |
| Peru | 1955 | Latin America and the Caribbean |
| Philippines | 1957 | East Asia and the Pacific |
| Poland | 1987 | Europe and Central Asia |
| Portugal2 | 1966 | — |
| Romania | 1990 | Europe and Central Asia |
| Russian Federation | 1993 | Europe and Central Asia |
| Rwanda | 1975 | Sub-Saharan Africa |
| S-T |  |  |
| St. Kitts and Nevis | 1996 | Latin America and the Caribbean |
| St. Lucia | 1982 | Latin America and the Caribbean |
| Samoa | 1974 | East Asia and the Pacific |
| Sao Tome and Principe | 2008 | Sub-Saharan Africa |
| Saudi Arabia | 1962 | Middle East and North Africa |
| Senegal | 1962 | Sub-Saharan Africa |
| Serbia | 1993 | Europe and Central Asia |
| Seychelles | 1981 | Sub-Saharan Africa |
| Sierra Leone | 1962 | Sub-Saharan Africa |
| Singapore2 | 1968 | — |
| Slovak Republic | 1993 | Europe and Central Asia |
| Slovenia | 1993 | Europe and Central Asia |
| Solomon Islands | 1980 | East Asia and the Pacific |
| Somalia | 1962 | Sub-Saharan Africa |
| South Africa | 1957 | Sub-Saharan Africa |
| Spain2 | 1960 | — |
| Sri Lanka | 1956 | South Asia |
| Sudan | 1960 | Sub-Saharan Africa |
| Swaziland | 1969 | Sub-Saharan Africa |
| Sweden2 | 1956 | — |
| Switzerland2 | 1992 | — |
| Syrian Arab Republic | 1962 | Middle East and North Africa |
 |  |  |
| Tajikistan | 1994 | Europe and Central Asia |
| Tanzania | 1962 | Sub-Saharan Africa |
| Thailand | 1956 | East Asia and the Pacific |
| Timor-Leste | 2004 | East Asia and the Pacific |
| Togo | 1962 | Sub-Saharan Africa |
| Tonga | 1985 | East Asia and the Pacific |
| Trinidad and Tobago | 1971 | Latin America and the Caribbean |
| Tunisia | 1962 | Middle East and North Africa |
| Turkey | 1956 | Europe and Central Asia |
| Turkmenistan | 1997 | Europe and Central Asia |
| U-Z |  |  |
| Uganda | 1963 | Sub-Saharan Africa |
| Ukraine | 1993 | Europe and Central Asia |
| United Arab Emirates | 1977 | Middle East and North Africa |
| United Kingdom2 | 1955 | — |
| United States2 | 1955 | — |
| Uruguay | 1968 | Latin America and the Caribbean |
| Uzbekistan | 1993 | Europe and Central Asia |
 |  |  |
| Vanuatu | 1981 | East Asia and the Pacific |
| Venezuela | 1956 | Latin America and the Caribbean |
| Vietnam | 1967 | East Asia and the Pacific |
 |  |  |
| Yemen, Republic of | 1970 | Middle East and North Africa |
 |  |  |
| Zambia | 1965 | Sub-Saharan Africa |
| Zimbabwe | 1980 | Sub-Saharan Africa
|