OA (O/A)Open Account
OAOfficial Aid
OASOrganization of American States
ODAOfficial Development Assistance
OEOil Equivalent
OECDOrganization for Economic Cooperation and Development
OECSOrganisation of Eastern Caribbean States
OEDOperations Evaluation Department (World Bank)
OEECOrganization for European Economic Cooperation
OEMOriginal Equipment Manufacturer
OFACOffice of Foreign Assets Control, U.S. Department of the Treasury
OMAOrderly Marketing Agreement
OOFOther official flows
OPECOrganization of Petroleum Exporting Countries
OPICOverseas Private Investment Corporation (United States)
OPICOverseas Private Investment Corporation