O
OAS: Organisation of American States
OAU: Organisation of African Unity
OBC: Other Backward Communities
OBU: Offshore Banking Unit
ODA: Official Development Assistance
ODF: Open Document Format
ODS: Ozone Depletion Substances
OECD: Organisation of Economic Co-operation and Development
OGL: Open General Licence
OIC: Organisation of Islamic Countries
OIGS: On India Government Service
OIL: Oil India Limited
OM: Order of Merit
ONGC: Oil and Natural Gas Commission
OPEC: Organisation of Petroleum Exporting Countries
OSCE: Organisation for Security and Cooperation in Europe
OSD: Officer on Special Duty
OXML: Open Extended Marking Language
2010-08-02