O
OAPEC
Organization of Arab Petroleum Exporting Countries
OAS
Organization of American States
OAU
Organization of African Unity; see African Union
ODA official development assistance
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
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
OSCE
Organization for Security and Cooperation in Europe
Ozone Layer Protection
Montreal Protocol on Substances That Deplete the Ozone Layer