Afghanistan (1963)
Australia (founding member, 1950)
Bangladesh (1972)
Bhutan (1962)
Brunei (2008)
Fiji (1972)
India (founding member, 1950)
Indonesia (1953)
Iran (1966)
Japan (1954)
Republic of Korea (1962)
Laos (1951)
Malaysia (1957)
Maldives (1963)
Mongolia (2004)
Myanmar (1952)
Nepal (1952)
New Zealand (founding member, 1950)
Pakistan (founding member, 1950)
Papua New Guinea (1973)
Philippines (1954)
Saudi Arabia (2012)
Singapore (1966)
Sri Lanka (founding member, 1950)
Thailand (1954)
United States of America (1951)
Vietnam (2004)
United Nations Office on Drugs and Crime (UNODC)
The International Consortium of Universities for Drug Demand Reduction (ICUDDR)
International Society of Substance Use Professionals (ISSUP)
African Union (AU)
Economic Community of West African States (ECOWAS)
The INTER-AMERICAN DRUG ABUSE CONTROL COMMISSION (CICAD)
