International drug convention

"International drug convention" could mean any of several international conventions:
 * the 1907 International Opium Convention
 * the 1925 Agreement concerning the Manufacture of, Internal Trade in and Use of Prepared Opium
 * the 1931 Convention for Limiting the Manufacture and Regulating the Distribution of Narcotic Drugs
 * the 1931 Agreement for the Control of Opium Smoking in the Far East
 * the 1961 Single Convention on Narcotic Drugs
 * the 1971 Convention on Psychotropic Substances
 * the 1988 United Nations Convention Against Illicit Traffic in Narcotic Drugs and Psychotropic Substances