|
| colspan=2 style="text-align: center;" | '''តំបន់អាស៊ីប៉ាស៊ីហ្វិក''': ៤៨ប្រទេស
|-
|{{flagflagcountry|Afghanistan}} || 1966
|-
|{{flagflagcountry|Australia}} || 1966
|-
|{{flagflagcountry|Cambodia}} || 1966
|-
|{{flagflagcountry|India}} || 1966
|-
|{{flagflagcountry|Indonesia}} || 1966
|-
|{{flagflagcountry|ជប៉ុន}} || 1966
|-
|{{flagflagcountry|Korea, Republic of}} || 1966
|-
|{{flagflagcountry|Lao People's Democratic Republic}}<ref>Joined as {{Flag|Kingdom of Laos}}, succeeded by Lao PDR in 1975</ref> || 1966
|-
|{{flagflagcountry|Malaysia}} || 1966
|-
|{{flagflagcountry|Nepal}} || 1966
|-
|{{flagflagcountry|New Zealand}} || 1966
|-
|{{flagflagcountry|Pakistan}} || 1966
|-
|{{flagflagcountry|Philippines}} || 1966
|-
|{{flagflagcountry|Samoa}} || 1966
|-
|{{flagflagcountry|Singapore}} || 1966
|-
|{{flagflagcountry|Sri Lanka}} || 1966
|-
|{{flagflagcountry|Taiwan|name=Taipei, China}}<ref>[http://www.adb.org/publications/taipei-china-fact-sheet Taipei,China's Fact Sheet on the ADB website]</ref><ref>Joined as {{Flag|Republic of China|name = China, Republic of}} representing not only [[Taiwan Area]], but also nominally [[Mainland China]] until 1986. However, its share of Bank capital was based on the size of Taiwan's capital, unlike the World Bank and IMF where the government in Taiwan had had a share. The representation was succeeded by {{Flag|China|name = People's Republic of China}} in 1986. However, the ROC was allowed to retain its membership, but under the name of Taipei, China — a name it protests. Uniquely, this allows both sides of the Taiwan Straits to be represented at the institution.</ref> || 1966
|-
|{{flagflagcountry|Thailand}} || 1966
|-
|{{flagflagcountry|Vietnam|name=Viet Nam, Socialist Republic of}}<ref>Formerly {{Flag|South Vietnam|name = Viet Nam, Republic of}} until 1975</ref> || 1966
|-
|{{flagflagcountry|Hong Kong, China}}<ref>Joined as "Hong Kong"</ref> || 1969
|-
|{{flagflagcountry|Fiji}} || 1970
|-
|{{flagflagcountry|Papua New Guinea}} || 1971
|-
|{{flagflagcountry|Tonga}} || 1972
|-
|{{flagflagcountry|Bangladesh}} || 1973
|-
|{{flagflagcountry|Burma}} || 1973
|-
|{{flagflagcountry|Solomon Islands}} || 1973
|-
|{{flagflagcountry|Kiribati}} || 1974
|-
|{{flagflagcountry|Cook Islands}} || 1976
|-
|{{flagflagcountry|Maldives}} || 1978
|-
|{{flagflagcountry|Vanuatu}} || 1981
|-
|{{flagflagcountry|Bhutan}} || 1982
|-
|{{flagflagcountry|China, People's Republic of}} || 1986
|-
|{{flagflagcountry|Marshall Islands}} || 1990
|-
|{{flagflagcountry|Micronesia, Federated States of}} || 1990
|-
|{{flagflagcountry|Mongolia}} || 1991
|-
|{{flagflagcountry|Nauru}} || 1991
|-
|{{flagflagcountry|Tuvalu}} || 1993
|-
|{{flagflagcountry|Kazakhstan}} || 1994
|-
|{{flagflagcountry|Kyrgyzstan|name=Kyrgyz Republic}} || 1994
|-
|{{flagflagcountry|Uzbekistan}} || 1995
|-
|{{flagflagcountry|Tajikistan}} || 1998
|-
|{{flagflagcountry|Azerbaijan}} || 1999
|-
|{{flagflagcountry|Turkmenistan}} || 2000
|-
|{{flagflagcountry|Timor-Leste}} || 2002
|-
|{{flagflagcountry|Palau}} || 2003
|-
|{{flagflagcountry|Armenia}} || 2005
|-
|{{flagflagcountry|Brunei Darussalam}} || 2006
|-
|}
| colspan=2 style="text-align: center;" | '''តំបន់ដទៃទៀត''': ១៩ប្រទេស
|-
|{{flagflagcountry|Austria}} || 1966
|-
|{{flagflagcountry|Belgium}} || 1966
|-
|{{flagflagcountry|Canada}} || 1966
|-
|{{flagflagcountry|Denmark}} || 1966
|-
|{{flagflagcountry|Finland}} || 1966
|-
|{{flagflagcountry|Germany}}<ref>Founding member; joined as [[West Germany]].</ref> || 1966
|-
|{{flagflagcountry|Italy}} || 1966
|-
|{{flagflagcountry|Netherlands}} || 1966
|-
|{{flagflagcountry|Norway}} || 1966
|-
|{{flagflagcountry|Sweden}} || 1966
|-
|{{flagflagcountry|United Kingdom}} || 1966
|-
|{{flagflagcountry|United States}} || 1966
|-
|{{flagflagcountry|Switzerland}} || 1967
|-
|{{flagflagcountry|France}} || 1970
|-
|{{flagflagcountry|Spain}} || 1986
|-
|{{flagflagcountry|Turkey}} || 1991
|-
|{{flagflagcountry|Portugal}} || 2002
|-
|{{flagflagcountry|Luxembourg}} || 2003
|-
|{{flagflagcountry|Ireland}} || 2006
|-
|}
| 