OECD
Organization for Economic Cooperation and Development
OECS
Organization of Eastern Caribbean States
OHCHR
Office of the United Nations High Commissioner for Human Rights
OIC
Organization of the Islamic Conference
OIF
International Organization of the French-speaking World
ONUB
United Nations Operation in Burundi
OOF other official flows
OPANAL
Agency for the Prohibition of Nuclear Weapons in Latin America and the
Caribbean
OPCW
Organization for the Prohibition of Chemical Weapons
OPEC
Organization of Petroleum Exporting Countries