OAA	Ontario Automobile Association
OAB	Ocean Affairs Board
OAC	Oceanic Area Control [Center]
OAD	Open Architecture Driver
OAE	Operational Area Evaluation
OAF	Objective Award Fee
OAF	Origin Address Field
OAF	Originating Address Format
OAF	[GNOME] Object Activation Framework
OAG	Office of the Auditor-General
OAG	Official Airline Guide
OAG	Open Applications Group
OAG	Overly Attached Girlfriend
OAH	Organization of American Historians
OAI	Open APIs Initiative
OAI	Open Applications Interface
OAI	Open Archives Initiative
OAI	Organisational Activity Interface
OAJ	Oregon Athletics Journal
OAK	Object Application Kernel
OAL	OEM Adaptation Layer
OAL	Other AirLine
OAL	[EFF] Open Audio License
OAM	Object Allocation Map
OAM	Object Authority Manager
OAM	On A Mission
OAM	Open Application Model
OAM	Operation, Administration and Maintenance
OAM	Optical Absorption Microscope
OAM	Orbital Angular Momentum
OAM	Order of Australia Medal
OAN	One America News
OAN	Overshoot Amplitude Noise
OAO	Orbiting Astronomical Observatory
OAO	Over And Out
OAP	Old Age Pensioner
OAP	Open Automated Protocol
OAP	Operating and Administrative Procedures
OAQ	Office of Air Quality
OAR	Office of Aid Representation
OAR	Office of Air and Radiation
OAR	[Office of] Oceanic and Atmospheric Research
OAS	Office Automation System
OAS	Open Application Server
OAS	Open Atmospheric Society
OAS	OpenAPI Specification
OAS	Organization of American States
OAS	Original Antigenic Sin
OAT	Operational Air Traffic
OAT	Optional Auxiliary Terminal
OAT	Optometry Admission Test
OAT	Outside Air Temperature
OAU	Organisation of African Unity
OAV	Original Animation Videos
OAW	On Another World
OAX	Object-oriented API for XML
OAY	Outstanding Airman of the Year
OAZ	Ones And Zeros
OBA	Object Behavior Analysis
OBA	One Block Ahead
OBA	Oxygen Breathing Apparatus
OBB	Olivier Berendinus Bommel
OBB	Operating Budget Baseline
OBB	Oriented Bounding Box
OBC	On Board Checkout
OBC	On-Board Computer
OBC	Outside Back Cover
OBD	Object-Based Disks
OBD	On-Board Diagnostic
OBD	[SUN] Online Bugs Database
OBE	Officer of the British Empire
OBE	Order of the British Empire
OBE	Ordinary Bloody Effort
OBE	Out-of-Body Experience
OBE	Overcome By Events
OBF	Ordering and Billing Forum
OBH	Oh Bloody Hell
OBI	Open Bolt Indicator
OBI	Open Buying on the Internet
OBI	Originating Beneficiary Information
OBJ	Ottawa Business Journal
OBK	Oppenheimer-Brinkman-Kramers
OBL	Object-Based Language
OBL	One Block Lookahead
OBL	Osama Bin Laden
OBM	Original Brand Manufacturer
OBM	OutBoard Motor
OBN	Open Business Network
OBO	Or Best Offer
OBP	On Base Percentage
OBP	On-Board Processing
OBP	Online Browsing Platform
OBP	Outer Balance Piston
OBQ	One Big Query
OBQ	Overture for Brass Quintet
OBR	Office of Budget Responsibility
OBR	Open Business Report
OBR	Optical Beam Rider
OBS	OMNI Bearing Selector
OBS	Open Build System
OBS	Optical Boresight System
OBS	Optical Burst Switching
OBS	Orbital Bombardment System
OBS	Organisational Breakdown Structure
OBS	Organization for Black Struggle
OBT	Orange Blossom Trail
OBU	On-Board Unit
OBU	OSIS Baseline Upgrade
OBV	OBligated Volunteer
OBW	OneBlueWorld, Incorporated
OBY	Outreach Baptist Youth
OBZ	On Beyond Zebra
OCA	Offensive Counter Air
OCA	Online Covert Action
OCA	Open Content Alliance
OCA	Operational Control Authority
OCA	OPTEC Contracting Authority
OCA	Oracle Contributor Agreement
OCA	Original Classification Authority
OCB	Oil Circuit Breaker
OCC	Office Communications Cabinet
OCC	Office of the Comptroller of the Currency
OCC	Operations Control Center
OCC	Optical Channel Carrier
OCC	Optimistic Concurrency Control
OCC	Originating Call Control
OCC	Other Common Carrier
OCD	Obsessive Christmas Disorder
OCD	Obsessive-Compulsive Disorder
OCD	Occupational Cervicobrachial Disorders
OCD	Online Compulsive Disorder
OCD	Operational Concept Document
OCD	Operational Control Dashboard
OCD	Organized Crime Division
OCD	Over-Compensating Dude
OCE	One-Center Expansion
OCF	Open Computing Facility
OCF	Open Container Format
OCF	OpenCard Framework
OCF	Operating Cash Flow
OCF	Operations Control Facility
OCG	Operational Coordination Group
OCG	Optical Carrier Group
OCH	Off-Campus Housing
OCH	OilCan Harry's
OCI	Object Computing, Incorporated
OCI	Object Content Information
OCI	Office of Compliance and Inspections
OCI	Open Circuit Interval
OCI	Open Connection Indication
OCI	Open Container Initiative
OCI	Oracle Call Interface
OCI	Out of City Indicator
OCJ	Orthodox Church in Japan
OCL	Office of Congressional Liaisons
OCL	Open Client Library
OCL	[UML] Object Constraint Language
OCM	Object Code Maintained
OCM	Office Carrier Module
OCM	On Condition Monitoring
OCM	Open Code Market
OCN	Open Computer Network
OCO	Object Code Only
OCO	Orbiting Carbon Observatory
OCO	Overseas Contingency Operations
OCP	Office of Civilian Personnel
OCP	Omni Consumer Products
OCP	Open Compute Project
OCP	Open-Closed Principle
OCP	Operational Capability Plan
OCP	Oracle Certified Professional
OCP	Over Current Protection
OCR	Office of Civil Rights
OCR	On-Call Review
OCR	Optical Character Recognition
OCS	Occult Crime Squad
OCS	Officer Candidate School
OCS	Old Church Slavonic
OCS	Operational Control System
OCS	Optical Convergence Switch
OCS	Outer Continental Shelf
OCS	Overseas Courier Service
OCS	[Amiga] Original ChipSet
OCU	Office Channel Unit
OCU	Operational Conversion Unit
OCU	Orthodox Church of Ukraine
OCV	Operational-Compliance Value
OCW	Old Cars Weekly
OCW	Overseas Contract Workers
OCX	OLE Control eXtensions
OCY	Office for Children and Youth
ODA	Object Discovery Agent
ODA	Official Development Aid
ODA	Open Data Application
ODA	Open Document Architecture
ODA	Operational Detachment Alpha
ODA	OverDeveloped Amateurs
ODA	Overseas Development Administration
ODB	Old Dirty Bastard
ODB	Online DataBase
ODC	Optical Disc Corporation
ODC	Optical Disk Cartridge
ODC	Order of Discalced Carmelites
ODC	Other Direct Costs
ODC	Ozone Destroying Chemical
ODD	Office of Due Diligence
ODD	Operator Distance Dialing
ODD	Oppositional Defiant Disorder
ODD	Optical Disc Drive
ODE	Object Database and Environment
ODE	Ordinary Differential Equation
ODF	Offshore Dynamic Fund
ODF	Open Document Format
ODF	Ordering & Distribution Facility
ODG	Object Developers Group
ODH	Ohio Department of Health
ODI	Object Definition Include [file]
ODI	Open Datalink Interface
ODI	Optical Digital Image
ODI	Overseas Development Institute
ODI	Overseas Direct Investment
ODK	Object Discovery Kit
ODL	Object Definition Language
ODL	Object Description Language
ODL	On-Demand Layer [Addition]
ODL	Open and Distance Learning
ODM	Object Data Manager
ODM	Operating Data Manuals
ODM	Organizational Domain Modeling
ODM	Original Design Manufacturer
ODM	Original Device Manufacturer
ODN	Optical Data Network
ODO	One Dog's Opinion
ODP	Ocean Drilling Program
ODP	Open Directory Project
ODP	Open Distributed Processing
ODP	Outline Development Plan
ODQ	Other Dueling Questions
ODR	Octal Data Rates
ODR	One Definition Rule
ODR	Ones Density Rule
ODR	Online Dispute Resolution
ODR	Optical Data Recognition
ODR	Optimized Dynamic Routing
ODS	Online Diagnostic System
ODS	Open Data Services
ODS	Open Domain Server
ODS	OpenServer Development System
ODS	OpenStack Design Summit
ODS	Operational Data Store
ODS	Overhead Data Stream
ODS	Ozone-Depleting Substances
ODT	Online Debugging Technique
ODT	[Microsoft] Office Developer Tools
ODU	Optical Density Unit
ODV	Overspeed and Drain Valve
ODW	[IBM] On Demand Workplace
ODX	Old Dominion X-Press
ODY	Office of Dineh Youth
ODZ	Operational Defense Zone
OEA	Old Etonian Association
OEA	Oxford English Academy
OEA	[PPC] Operating Environment Architecture
OEB	Open E-Book Standard
OEB	Operations Engineering Bulletin
OEC	Operational Evaluation Command
OEC	Organisation Entity Code
OEC	Other Exchange Company
OED	Oxford English Dictionary
OEE	Operating Equipment Efficiency
OEE	Overall Equipment Effectiveness
OEF	Operation Enduring Freedom
OEF	Operational Efficiency Factor
OEG	Operational Exposure Guide
OEH	One-Electron Hamiltonian
OEI	One Engine Inoperative
OEI	Operational Engineering Instruction
OEJ	One Eyed Jack
OEL	Organic Film Electro-Luminescent
OEL	Organizational Equipment List
OEM	Office of Emergency Management
OEM	Official Equipped Manufacturer
OEM	Original Equipment Manufacturer [Intel/Microsoft reseller]
OEN	Original Equipment Number
OEO	Office of Economic Opportunity
OEP	Office of Economic Preparedness
OEP	Open Experimental Platform
OEQ	Organizational Effectiveness Questionnaire
OER	Office of Environmental Restoration
OES	Office of Earthquake Studies
OES	Open Enterprise Services
OES	Open Enterprise Systems [Company Limited]
OES	Optical Emission Spectroscopy
OES	Orbital Eunuchs Sniper
OES	Order of the Eastern Star
OES	[Novell] Open Enterprise Server
OET	Office of Economic Transition
OEU	Operation Eyesight Universal
OEU	Operational Evaluation Unit
OEU	Overhead Electronics Units
OEV	Occupational Exposure Values
OEW	Offensive Electronic Warfare
OEW	Operational Empty Weight
OEX	Ocean EXplorer
OEY	Office of Employment and Youth
OFA	Obama For America
OFA	Office of Fiscal Administration
OFA	Open Fabrics Alliance
OFA	Organizing For Action
OFB	Office of Foreign Buildings
OFB	Open For Business
OFB	Output FeedBack
OFC	Optical Fiber Conference
OFC	Oxygen-Free Copper
OFD	One-Function Diagram
OFD	Open File Description
OFE	Order For Engagement
OFF	Object File Format
OFG	Opportunity For Growth
OFH	Oh Fucking Hell
OFI	Office of Financial Institutions
OFJ	Our Family Journal
OFK	Operation FitKids
OFL	Open Font License
OFM	Order of Friars Minor
OFM	Organisational Field Maintenance
OFN	Oregon Flora Newsletter
OFO	Oregon Field Ornithologists
OFP	Office of Fair Practice
OFP	Operational Flight Programme
OFR	Office of Federal Register
OFR	Old FRench
OFR	On-Field Review
OFS	Object FileSystem
OFS	Open File Server
OFS	Orange Free States
OFS	Order of Free State
OFT	Operational Flight Trainer
OFT	[UK] Office of Fair Trading
OFU	Optical Fiber Unit
OFV	Old Filtering Value
OFV	OutFlow Value
OFV	OverFlow Valve
OFW	Oh Fucking Well
OFX	Open Financial eXchange
OFY	Opportunities For Youth
OFZ	Obstacle Free Zone
OGA	One Generation Ahead
OGA	Other Government Agency
OGA	[Microsoft] Office Genuine Advantage
OGB	Oil and Gas Board
OGB	OpenSolaris Governing Board
OGC	Office of the General Counsel
OGC	Open GIS Consortium
OGC	[UK] Office of Government Commerce
OGD	Operator Group Delft
OGD	Overhead Garage Door
OGE	Office of Government Ethics
OGE	Operating Ground Equipment
OGF	Open Gaming Foundation
OGF	Open Grid Forum
OGF	Overseas Growth Fund
OGG	Order of the Georges and Georgettes
OGH	[CDC] Office of Global Health
OGI	Oregon Graduate Institute
OGJ	Oil & Gas Journal
OGL	Open General License
OGL	Overall Grade Level
OGM	Out-Going Message
OGN	On the Ground News
OGN	Online Gaming Network
OGO	Officer Grade Objectives
OGP	Office of Global Partnerships
OGP	Office of Global Programs
OGP	Open Graphics Project
OGP	Open Grid Protocol
OGR	Office of Geologic Repositories
OGR	Optimal Golomb Ruler
OGS	Operator-to-General Support
OGT	OutGoing Trunk
OGU	Osaka Gakuin University
OGV	Oak Glen Varsity
OGV	Outlet Guide Vane
OGW	Office of Ground Water
OGX	OutGoing eXchange
OGY	Ott, Grebogi, and Yorke
OGZ	Orthogonal Gelfand-Zetlin
OHA	Open Handset Alliance
OHA	Operating Hazard Analysis
OHA	Overseas Housing Allowance
OHB	Orleans HomeBuilders
OHC	Ocean Heat Content
OHC	OverHead Camshaft
OHD	Office of Hydrologic Development
OHE	Office of Hanford Environment
OHF	OverHead Fire
OHG	Old High German
OHH	Occupational Health and Hygiene
OHI	Oily House Index
OHI	Omega Healthcare Investors
OHI	Organisational Health Index
OHI	OverHaul Instruction
OHJ	Online Help Journal
OHL	Ontario Hockey League
OHM	Observe, Hack, Make
OHM	Office of Hazardous Materials
OHM	Open Hardware Manufacturing
OHN	Operation Healthy Neighborhoods
OHO	Oduduwa Heritage Organization
OHP	OverHead Projection
OHQ	Oregon Historical Quarterly
OHR	Operational Hazard Report
OHS	Office of Highway Safety
OHS	Open Hyperdocument System
OHT	Overhead Hoist Transport
OHT	OverHead Transmission tower
OHU	Occupational Health Unit
OHU	Ocean Heat Uptake
OHU	OverHead Unit
OHV	OverHead Valve
OHV	OverHead Vehicle
OHW	Oral History Workshop
OHY	Order of Hsu Yun
OIA	Office of International Activities
OIA	Open Information Access
OIB	Ocean Island Basalt
OIC	Office of Insurance Commission
OIC	Official Information Commission
OIC	Oh, I see [!]
OIC	Organisation of Islamic Conference
OID	Object IDentifier
OID	Outline Installation Drawing
OIF	Open Insulin Foundation
OIF	Optical Internetworking Forum
OIF	Osteogenesis Imperfecta Foundation
OIG	Office of the Inspector General
OIH	Ohio Industries for the Handicapped
OII	Occupational Injury or Illness
OIL	Object Implementation Language
OIL	Obsolete Item Lists
OIL	OpenStack Interoperability Lab
OIL	Operator Identification Language
OIM	Office of Industrial Mobilization
OIM	Open Information Model
OIM	Operator Initialization Manual
OIM	OSI Internet Management
OIN	Online Investor Network
OIN	Open Invention Network
OIN	Oracle Information Navigator
OIO	Obligated Involuntary Officer
OIO	Opportunities In Options
OIP	Office of Industrial Programs
OIP	Office of Information Policy
OIP	Operational Improvement Program
OIP	Osdorp Internet Posse
OIR	Office of Instructional Resources
OIR	Online Insertion and Removal
OIR	Operation Inherent Resolve
OIR	Other Information Requirements
OIS	Objective Instrumentation System
OIS	Office Information System
OIS	Open Interface Specification
OIS	Operations Information System
OIS	Organization for Internet Safety
OIS	Overnight Indexed Swap
OIT	Office of Information Technology
OIT	Oil Inlet Temperature
OIT	Oxidation Induction Time
OIU	Office Interface Unit
OIU	Operator Interface Unit
OIU	Orientation/Introduction Unit
OIW	Open Information Warehouse
OIX	Oregon Internet eXchange
OIY	Out In York
OJA	Office of Justice Assistance
OJB	ObJect-Relational Bridge
OJB	Online Journal of Bioinformatics
OJC	Operation Just Cause
OJD	Oregon Judicial Department
OJE	On-the-Job Evaluator
OJF	Ontario Job Futures
OJG	Operation Joint Guard
OJH	Open Junior High [School]
OJI	On-the-John Interruption
OJI	Open JVM Integration
OJJ	Office of Juvenile Justice
OJM	Oregon Jewish Museum
OJN	Ohio Job Net
OJP	Office of Justice Programs
OJP	On the Job Performance
OJR	On the Job Review
OJS	Organization Jointly Shared
OJT	On the Job Training
OJU	Oceania Judo Union
OJW	Oaktown Jazz Workshops
OKA	Ontario Kinesiology Association
OKC	Ottawa Kennel Club
OKD	Open Knowledge Definition
OKD	Our Kind, Dear
OKE	Open Kernel Environment
OKE	Optical Kerr Effect
OKF	Okinawan Karate Federation
OKG	Ornithine alpha-Keto-Glutarate
OKI	Open Knowledge Initiative
OKJ	Old King James
OKK	Oxfordshire Kadet Karting
OKM	Organizing for Knowledge Management
OKP	OpenServer Kernel Personality
OKQ	One Key Question
OKR	Objectives and Key Results
OKR	Open Knowledge Resource
OKS	Ontopia Knowledge Suite
OKU	OKlahoma University
OKY	Organization of Kurdish Youth
OKZ	Omega Kappa Zeta
OLA	Obligatory List Article
OLA	Optical Laboratories Association
OLB	OnLine Banking
OLB	OnLine Bible
OLB	Outer Lead Bond
OLB	Outside Line Backer
OLC	Oak Leaf Cluster
OLC	Office of Legal Counsel
OLC	On-line Learning Center
OLD	Operating Level Days
OLE	[Microsoft] Object Linking & Embedding
OLF	Over-Land Flow
OLG	Our Lady of Grace [School]
OLH	Oriental LongHair
OLI	Operational Land Imager
OLI	Originating Line Information
OLI	OSI Library Interface
OLJ	Optimum Learning Japanese
OLL	OnLine Library
OLM	O'odua Liberation Movement
OLM	Object Location Manager
OLM	OnLine Monitor
OLM	Operational Loads Measurement
OLM	Operator Lifecycle Manager
OLN	Oracle Learning Network
OLN	Outdoor Life Network
OLO	OnLine Opinion
OLO	Optical Local Oscillator
OLO	Other Local Operator
OLP	Object Link Provider
OLP	On-Line Printer
OLP	On-Line Provisioning
OLQ	Organizational Leadership and Quality
OLR	OffLine Reader
OLR	Outgoing Longwave Radiation
OLS	Online Library System
OLS	Open Learning Support
OLS	Operation Lifeline Sudan
OLS	Operational Level Support
OLS	Ottawa Linux Showcase
OLS	Ottawa Linux Symposium
OLS	[Manx] Overseas Labour Scheme
OLT	On-Line Testing
OLT	Orbital Launch Tower
OLU	Organization of Lukumi Unity
OLV	Ordinary LeaVe
OLW	On-Line World
OLW	Operational Landing Weight
OLX	Off-Line eXpress
OLY	Oregon Lutheran Youth
OLZ	Old Level Zero
OMA	Open Mobile Alliance
OMA	Operations and Maintenance, Army
OMA	Optical Multichannel Analyzer
OMA	Organisational Maintenance Activity
OMA	[OMG] Object Management Architecture
OMB	Orange Man Bad
OMB	[USA] Office of Management and Budget
OMC	Oh My Clawed
OMC	Operations & Maintenance Centre
OMC	Otara Millionaire's Club
OMD	Orchestral Maneuvers in the Dark
OMD	Original Manufacturer Data
OME	Open Messaging Environment
OME	Operating Mass Empty
OME	Operational Mission Environment
OME	Order Management Engine
OME	Oregon Microcomputer Engineering
OME	Original Measurement Error
OMF	Officer Master File
OMF	Offshoring Management Framework
OMG	Object Management Group
OMG	Oh My God
OMG	Outlaw Motorcycle Gang
OMH	Office of Minority Health
OMI	Office of Medical Investigations
OMI	Oklahoma Marriage Initiative
OMI	OpenCAPI Memory Interface
OMI	Operation and Maintenance Instruction [manual]
OMI	Ozone Monitoring Instrument
OMJ	Open Mind Journals
OMM	Operation and Maintenance Manual
OMM	Output Message Manual
OMN	Operations and Maintenance, Navy
OMP	Operation and Maintenance Phase
OMR	Operational Management Review
OMR	Optical Mark Recognition
OMS	Object Management System
OMS	Office of the Martyr Sadr
OMS	Onboard Maintenance System
OMS	Open Missions Systems
OMS	Open Music System
OMS	Optical Mass Spectroscopy
OMS	Orbital Maneuvering System
OMS	Order Management System
OMT	Object Modeling Technique
OMT	Onboard Maintenance Terminal
OMT	Outbreak Management Team
OMU	One-Man Unix
OMU	Owensboro Municipal Utilities
OMV	Office of Motor Vehicles
OMV	Orbital Maneuvering Vehicle
OMW	Ocean Monitoring Workstation
OMW	On My Way
OMX	Ohio Material eXchange
OMY	Online Muslim Youth
OMZ	Oxygen Minimization Zone
ONA	Open Network Architecture
ONA	Operator New Anonymous
ONA	Overseas National Airways
ONB	Orienteering New Brunswick
ONC	Open Network Computing
ONC	Ordinary National Certificate
OND	Operational Need Data
OND	Ordinary National Diploma
ONE	Other Network Entities
ONE	[SUN] Open Net Environment
ONF	Olympic National Forest
ONG	Ohio National Guard
ONH	Optic Nerve Hypoplasia
ONI	Oceanic Nino Index
ONI	Office of Naval Intelligence
ONI	OpenNet Initiative
ONI	Operator Number Identification
ONL	Organization Net List
ONM	Open Network Management
ONN	Ohio News Network
ONN	Oldest Not Needed
ONO	Or Nearest Offer
ONP	Open Network Provision
ONP	Optical Nuclear Polarization
ONR	Office of Naval Research
ONS	Office for [UK] National Statistics
ONS	Operational Need Statement
ONU	Optical Network Unit
ONV	OpenDaylight Network Visualization
ONV	Optics for Night Vision
ONW	OverNight Ward
ONX	Open Node syntaX
ONY	Organisation of Native Youth
OOA	Object-Oriented Analysis
OOA	Out Of Air
OOA	Out Of Area
OOB	Offensive Operations Branch
OOB	Out-Of-Band [data]
OOC	Ohio Organizing Collaborative
OOC	Out Of Character
OOD	Object-Oriented Design
OOD	Officer Of the Deck
OOE	Object Oriented Engineering
OOE	Out-of-Order [instruction] Execution
OOF	Object-Oriented Finite element
OOF	Object-Oriented Forth
OOF	Object-Oriented Fortran
OOF	Office Of Finance
OOF	Office Of the Future
OOF	Out Of Food
OOF	Out Of Frame
OOF	Out-Of-Focus
OOF	Outrage Object Format
OOG	Object Orientation Game
OOG	Ocean Outfall Group
OOG	Office Of the Government
OOG	Old Order Group
OOG	Out Of Game
OOG	Out Of Gauge
OOH	Object Oriented HTML
OOH	Occupational Outlook Handbook
OOH	Out Of Hemisphere
OOH	Out Of Hours
OOI	Object-Oriented Interoperability
OOI	Out Of Interest
OOJ	Order Of Johns
OOK	On-Off Key
OOL	Object-Oriented Language
OOL	Open Objects Library
OOL	Out Of Limits
OOM	Object-Oriented Middleware
OOM	Orders Of Magnitude
OOM	Out Of Memory
OOM	Outside Office Memo
OON	Out Of Network
OOO	Out Of Office
OOO	Out-Of-Order [instruction execution]
OOP	Object-Oriented Programming
OOP	Out Of Plant
OOP	Out Of Production
OOR	Object-Oriented Requirements
OOS	Only One Shot
OOS	Out-Of-Service
OOT	Object-Oriented Technology
OOT	Out Of Time
OOT	Out Of Town
OOU	Out Of Use
OOV	Out Of View
OOV	Out-Of-Vocabulary
OOW	Officer Of the Watch
OOY	Office On Youth
OPA	Ocean Park Advisors
OPA	Office of Public Affairs
OPA	Ontario Podiatry Association
OPA	Oral Pharyngeal Airway
OPA	Outer Planets Alliance
OPB	Office of Plans and Budget
OPC	Ocean Products Center
OPC	Operations Per Cycle
OPC	Optical Particle Counter
OPC	Optical Proximity Correction
OPC	Optimum Power Control
OPC	Originating Point Codes
OPC	Other People's Code
OPC	Overall Planning Chart
OPD	Officer Personnel Directorate
OPD	Officer Professional Development
OPD	One Per Desk
OPE	Operational Proficiency Examination
OPF	Object Persistence Framework
OPF	Open Packaging Format
OPF	Orbiter Processing Facility
OPG	Online Policy Group
OPG	Optical Parametric Generator
OPH	Orders Per Hour
OPI	Office of Planning and Integration
OPI	Optional Procedure Indicator
OPJ	Orthogonal Persistence for Java
OPK	OEM Pre-installation Kit
OPL	Obvious Panty Line
OPL	Open Publication License
OPM	Office of Personnel Management
OPM	Operational Performance Management
OPM	Other People's Money
OPM	Outside Plant Module
OPN	Odd Perfect Number
OPN	Open Projects Net
OPN	Optional Part Number
OPN	Other Procurement, Navy
OPO	Optical Parametric Oscillator
OPP	Office of Planetary Protection
OPP	Oracle Partner Program
OPP	Other People's Penis
OPP	Other People's Problem
OPR	Office of Primary Responsibility
OPR	Office of Professional Responsibility
OPR	Official Pattern Release
OPR	Once Per Revolution
OPR	Outstanding Price Record
OPS	Off-Premises Station
OPS	Office of Personnel Systems
OPS	Office of the Permanent Secretary
OPS	Online Presentation Service
OPS	Open Publication Structure
OPS	Operations Per Second
OPS	Optical Packet Switching
OPS	Oracle Parallel Server
OPS	Oriental Princess Society
OPT	Open Protocol Technology
OPT	Optional Practical Training
OPU	Oregon Parents United
OPU	Overspeed Protection Unit
OPV	Offshore Patrol Vessel
OPV	Oral Polio Vaccine
OPV	OverPressure Valve
OPW	Objective Personal Weapon
OPW	Ohio Pattern Works
OPW	Opportunities & Products Warehouse
OPW	Orthogonalized Plane Wave
OPW	Outreach Program for Women
OPX	Off-Premises eXtension
OPX	OPerational eXcellence
OPY	Out and Proud Youth
OPZ	Optimal Performance Zone
OQL	Object Query Language
ORA	O'Reilly & Associates
ORA	Optimum Repair Analysis
ORB	Object Request Broker
ORB	Office Repeater Bay
ORB	OPEC Reference Basket
ORC	On Request Compilation
ORC	[SGI] Open Research Compiler
ORD	Operational Requirements Document
ORD	Optical Rotatory Dispersion
ORE	OPerational Readiness Evaluation
ORF	Open Reading Frame
ORG	Open Rights Group
ORG	Operational Requirements Group
ORI	Office of Research Integrity
ORI	Operational Requirement Indicator
ORL	OR-Logical
ORL	Outstanding Request List
ORM	Object-Relational Mapper
ORM	Operational Risk Management
ORM	Optical Remote Module
ORN	Originator's Reference Number
ORP	Office Relocation Project
ORP	Open Runtime Platform
ORP	Overhead Recovery Pool
ORR	Overhaul Replacement Rate
ORS	Occurrence Reporting System
ORS	Operations Reporting System
ORS	Oral Rehydration Solution
ORT	Ongoing Reliability Test
ORT	Operational Readiness Test
ORT	OSS Review Toolkit
ORU	Orbital Replacement Unit
OSA	Obstructive Sleep Apnoea
OSA	Open Scripting Architecture
OSA	Open Service Access
OSA	Open Solutions Alliance
OSA	Open Source Analysis
OSA	Operational System Administrator
OSA	Outfitting Supply Activity
OSA	[USA] Office of the Secretary of the Army
OSB	Operational Security Baseline
OSB	Operations Stations Book
OSB	Order of St. Benedict
OSC	Object Size Checking
OSC	Object Storage Client
OSC	Office of Special Counsel
OSC	One Stop Centre
OSC	Online Support Center
OSC	Ontario Securities Commission
OSC	Open Science Collaboration
OSC	Open Sound Control
OSC	Open Source Community
OSC	OpenSystems Center
OSC	Operator Services Center
OSC	Orbital Sciences Corporation
OSC	Orson Scott Card
OSD	Object-Based Storage Device
OSD	Office of the Secretary of Defense
OSD	On-Screen Display
OSD	One Shot Down
OSD	Open Software Distribution
OSD	Open Source Definition
OSD	Open Source Developers
OSD	Operational Stand Down
OSE	Open Software Environment
OSE	Operational Support Equipment
OSE	Oslo Stock Exchange
OSF	Open Science Framework
OSF	Open Society Foundation
OSF	Open Software Foundation
OSF	Oppose SUN Forever
OSF	Order of St. Francis
OSG	Operation Support Group
OSG	Organo Silicate Glass
OSG	OverSpeed Generator
OSH	Operator's SHell
OSI	On-Site Inspection
OSI	Ontario Swine Improvement
OSI	Open Society Institute
OSI	Open Systems Interconnection
OSI	Open-Source Initiative
OSI	Operating Space Item
OSI	Operational Support Instruction
OSI	Operational Support Inventory
OSI	Other Supplemental Information
OSI	Oxford Systems Integration
OSL	Open Source Laboratory
OSL	Open Source License
OSM	Office of Surface Mining
OSM	On-Site Maintenance
OSM	Open Source Matters
OSM	Open Source Media
OSM	Open Space Movement
OSM	Open Street Map
OSM	Operations Sequence Model
OSM	Optical Service Module
OSN	Office Systems Node
OSN	Online Social Network
OSN	Open Source News
OSN	Open Systems Network
OSO	OpenStack Operator
OSO	Originating Signaling Office
OSO	Overseas Support Operation
OSO	[SUN] Open Source Office
OSP	Office of Special Plans
OSP	Open Services Platform
OSP	Open Source Portfolio [Initiative]
OSP	Operating System Protected [domain]
OSP	Optical Storage Processor
OSP	Orbital Space Plane
OSP	Oregon State Police
OSP	OutSide Plant
OSP	[Microsoft] Open Specification Promise
OSR	Occupation Survey Report
OSR	Operating System Recreation [Project]
OSR	Orthogonal Spatial Regression
OSR	[Microsoft Windows] OEM Service [OS] Release
OSS	Object Services Standard
OSS	Office Support System
OSS	Open Sound System
OSS	Open Source Software
OSS	Operational Support System
OSS	Operator Service System
OSS	[USA] Office of Strategic Services [later CIA]
OST	Object Storage Target
OST	Open Source Technology
OST	Open Source Telecom
OST	Open Space Technology
OST	Open Standards Terminal
OST	Order Ship Time
OSU	Oklahoma State University
OSU	Oregon State University
OSU	Outboard Station Unit
OSV	Open Source Victoria
OSV	Open-Source Versatile
OSV	Operating System Vendor
OSX	Operating System 10 [!]
OTA	Oil sump Temperature APU
OTA	Online Travel Agency
OTA	Open Technology Assembly
OTA	Open Test Alliance
OTA	Over The Air
OTA	[HST] Optical Telescope Assembly
OTA	[USA] Office of Technology Assessment
OTB	Off-Track Betting
OTB	Outstanding Trace Buffer
OTC	One Time Charge
OTC	Operational Test Centre
OTC	Operator Training Course
OTC	Output Technology Corporation
OTC	Over The Counter
OTD	Observed Time Difference
OTD	Ornithine Transcarbamylase Deficiency
OTD	Orthogonal Transmit Diversity
OTD	[Microsoft] Outlook-Transmitted Disease
OTE	Opinion Target Extraction
OTF	On Top Fix
OTF	Open Telematics Framework
OTF	Open Token Foundation
OTG	[USB] On-The-Go
OTH	Over The Horizon
OTI	Object Technology International
OTL	Out To Lunch
OTM	Object Transaction Monitor
OTM	On The Make
OTM	On Time Marker
OTM	Optional Teaching Method
OTN	Oracle Technology Network
OTP	Omega Translation Process
OTP	On The Phone
OTP	On-line Transaction Processing
OTP	One Time Pad
OTP	One Time Password [Authentication]
OTP	Operation Test Piece
OTP	Operational Test Programme
OTP	Opposite Track Path
OTR	Off The Record
OTR	Old Time Radio
OTR	On The Rag
OTR	Opening Token Right
OTR	Operational Turn Round
OTR	Operations Trouble Report
OTS	Object Transaction Service
OTS	Ocean Thermal System
OTS	Off The Shelf
OTS	Office of Thrift Supervision
OTS	Officer Training School
OTS	Open Tax Solver
OTS	Open Text Summarizer
OTS	Out To Score
OTS	Overhaul Test Schedule
OTT	Object Type Translator
OTT	Over The Top
OTV	Orbital Transfer Vehicle
OTX	Online Testing eXchange
OUD	Over-engineered Ueber-specified Development
OUF	Optimal Unrolling Factor
OUI	Organizationally Unique Identifier
OUM	Ovonics Unified Memory
OVA	Open Virtual Appliance
OVC	Office for Victims of Crime
OVC	Offset-Value Coding
OVC	OTOP Village Champion
OVC	[Hewlett-Packard] OpenView Communications
OVD	Online Video Distributor
OVF	Open Virtualization Format
OVF	Open Voting Foundation
OVP	Office of the [USA] Vice President
OVP	Outflow Valve Position
OVP	OverVoltage Protection
OVS	Oracle Video Server
OWA	Outlook Web Access
OWC	Oil Water Contact
OWC	[Microsoft] Office Web Components
OWE	Open Water Effect
OWG	Ordinary White Guy
OWI	Operating While Intoxicated
OWL	OpenWall Linux
OWL	OverWhelmingly Large [Telescope]
OWO	Oral WithOut
OWS	Optional White Space
OXC	Optical CrossConnect [!]
OXP	[Microsoft] Office XP
OYC	Out Year Costs
OYM	O'odua Youth Movement