Abbreviation with Letter ‘O’

O&M – Organisation and Methods

O/C – Office Copy

OB – Opening Balance

OBC – Oriental Bank of Commerce

OBC – Other Backward Community

OBU – Offshore Banking Unit

OCA – Olympic Council of Asia

OCB – Overseas Corporate Bodies

OCR – Optical Character Recognition

OD – Over Draft

ODA – Official Development Assistance

OECD – Organisation for Economic Cooperation and Development

OECO – Organisation for Economic Co-operation

OFI – Other Financial Institutions

OGL – Open General Licence

OIC – Organisation of the Islamic Conference

OIGS – On India Government Service

OIL – Oil India Limited

OK – All Correct

OLTAS – Online Tax Accounting System

OM – Office Memorandum

OMO – Open Market Operations

OMR – Optical Mark Recognition

ONGC – Oil and Natural Gas Commission

OOP – Object Oriented Programming

OPCW – Organisation for the Prohibition of Chemical Weapons

OPEC – Organisation of Petroleum Exporting Countries

OPV – Oral Polio Vaccine

ORT – Oral Rehydration Therapy

OS – Operating System

OSCB – Other Indian Scheduled Commercial Bank

OSI – Open Systems Interconnection

OSS – Open Source Software

OSV – Offshore Supply Vessels

OT – Overtime

OTA – Overtime Allowance

OU – Organisational Unit

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