Second International Opium Convention

1925 Geneva Opium Convention
International Convention, Adopted by the Second Opium Conference (League of Nations), and Protocol relating thereto. Signed at Geneva, February 19, 1925.
TypeDrug control
DraftedSeptember 1924 – February 1925
Signed19 February 1925
LocationThe Hague
Expiration13 December 1964

The Second International Opium Convention (also known as the Geneva Opium Convention or 1925 Opium Convention) is an international treaty signed at Geneva in 1925. The convention was an update of the efforts from the 1912 Hague Opium Convention.

The 1925 Convention introduced a statistical control system to be supervised by a Permanent Central Opium Board (a body independent but partly linked to the League of Nations), narrowed down a number of legal measures on opium, morphine, and cocaine, and placed introduced a system of international control for extracts and tinctures of cannabis.