OBC
:- Other Backward Community
OBU
:- Offshore Banking Unit
OCA
:- Olympic Council of Asia
OCB
:- Overseas Corporate Bodies
OCR
:- Optical Character Recognition
OGL
:- Open General Licence
OIC
:- Organisation of Islamic Conference
OIGS
:- On India Government Service
OIL
:- Oil India Limited
OK
:- All Correct
OM
:- Office Memorandom
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 Rehyderation Therapy
OSI
:- Open Systems Interconnection
OSV
:- Offshore Supply Vessels
OTA
:- Overtime Allowance
OS
:- Operating System
OSS
:- Open Source Software
OT
:- Overtime
OU
:- Organisational Unit
O&M
:- Organisation and Methods
O/C
:- Office Copy
OB
:- Opening Balance
:- Oriental Bank of Commerce
OD
:- Over Draft
ODA
:- Official Development Assistance
OECD
:- Organisation for Economic Cooperation and Development
OECO
:- Organisaton for Economic Co-operation
OFI
:- Other Financial Institutions
OLTAS
:- OnLine Tax Accounting System
OMO
:- Open Market Operations
OSCB
:- Other Indian Scheduled Commercial Bank