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The military and
government are famous for using - or overusing - abbreviations and acronyms for designating equipment, programs,
and agencies. These eight pages are chock full of nearly every commonly used abbreviations and acronyms used by
the U.S. military (at least up through around the year 2000).
O/A On or About OA (1) Office Automation; (2) Operations Analysis; (3) Operational
Area OAC Objective Architecture Center OAD (1) Operational Availability Date; (2) Objective
Architecture Document OAD-2 Objective Architecture Document, 2nd Iteration
OADR Originating Agency’s Determination Required OALAN Office Automation Local Area Network
OAMP Optical Airborne Measurements Program OAP (1) Organizational Assessment Package; (2) Offset Aim
Point OAPEC Organization of Arab Petroleum-Exporting Countries
OAS (1) Organization of American States; (2) Offensive Air Support OASA(RDA) Office of the Assistant
Secretary of the Army (Research, Development, and Acquisition) OASD Office of the Assistant Secretary of
Defense OASD(C3I) OASD (Command, Control, Communications, and Intelligence) OASIS (1) Operational
Application of Special Intelligence Systems; (2) Office Automation System for Intelligence Support OATS
(1) Operations Analysis for Tactical Support; (2) Online AIF Transaction System OAU Organization of
African Unity OB
Order of Battle OBC Optical Bar Camera OBE Overtaken By Events OBI Observable Human
Resources Intelligence OBI-OC OBI Operations Center OBIS Order of Battle Intelligence System
Obj Object OBP On-Board Processing OBO Official Business Only
OBS (1) Ocean Baseline System; (2) Orders of Battle System; (3) Observations (Optical Tracking)
OBSS (1) Off-Board Sensor Systems; (2) Operational Briefing Support System OBSUM
Order of Battle Summary OBU OSIS Baseline Upgrade OC (1) Dissemination and extraction of
Information Controlled; (2) Optical Carrier O&C Operations & Control OCA
(1) Ocean Control Authority; (2) Operational Control Authority; (3) Offensive Counterair
OCAC Operational Control and Analysis Center OCAM Afro-Malagasy and Mauritian Common Organization
OCAR Office, Chief of Army Reserve
OCCIS Operational Command and Control Information System OCCULT Optical Covert Communications Using
Laser Transceivers OCEANLANT Ocean Atlantic Area (NATO) OCJCS Office of the Chairman, Joint Chiefs
of Staff OCM Operational Coordination Message OCMA Objective Collection Management Architecture
OCMC Overhead Collection Management Center OCNO
Office of the Chief of Naval Operations OCOKA Observation and Fields of Fire, Concealment and Cover,
Obstacles, Key terrain, Avenues of Approach, and Mobility Corridors OCONUS Outside CONUS OCR (1)
Office of Collateral Responsibility; (2) Optical Character Reader OCS
(1) Officer Candidate School; (2) Offensive Counterspace OCS3 Optical Carrier 3 Communications
OCSA Office of the Chief of Staff of the Army OCSURV Ocean Surveillance OCU
Operational Conversion Unit OD Operating Directive(s) ODA Operational Detachment Alpha ODC
Office of Defense Cooperation ODCSINT Office of the Deputy Chief of Staff, Intelligence ODCSLOG
Office of Deputy Chief of Staff for Logistics ODCSPER Office of Deputy Chief of Staff for Personnel
ODECA Organization of Central American States
ODIN Operations Dedicated Imagery Network (LOCE) ODISC4 Office of Director Information Systems
Command, Control, Communications, Computers ODJS Office of the Director, Joint Staff ODP
(1) Officer Distribution Plan; (2) Office of Defense Planning ODRP
Office of the Defense Representative - Pakistan ODS (1) Open Data Server; (2) Operation DESERT STORM;
(3) Output Data Server OE Operational Effectiveness OECD Organization for Economic Cooperation and
Development OEE Operational ELINT Exploitation OEF
Operational Exploitation Facility OEG Operational Exposure Guide OEIC Overseas Economic
Intelligence Committee OER (1) Officer Evaluation Report; (2) Officer Efficiency Report; (3) Operational
ELINT Requirements OET Office of Emergency Transportation OFC Office
OFCO Offensive Counterintelligence Operation Off Officer OFM Office of Foreign Mission
OGOOI Operations Group Operations Officer Intelligence (Air Force) OGS Overseas Ground Station
OGSI Operations Group Support Intelligence (Air Force) OHD Over-the-Horizon Detection Radar OHD-B
Over-the-Horizon Detection Radar-Backscatter OI (1) Operating Instruction; (2) Operational Interest
O&I Operations & Intelligence OIA
(1) Office of Imagery Analysis; (2) Operations Intelligence Automation OIC Officer in Charge
OICC (1) Operational Intelligence Crisis Center; (2) Operational Intelligence Coordination Center OICS
Operational Intelligence Collection System OII Operations-Intelligence Interface OILO Operations
Intelligence Liaison Officer OIP (1) Offset Instrumentation Point; (2) Operator Interface Processor
OIR Operational Intelligence Requirement OISS
Operational Intelligence Support System OIW OII Workstation OJCS (1) Organization of the Joint
Chiefs of Staff; (2) Office of the Joint Chiefs of Staff OJT On-the-Job Training
OL Operating Location OLC Oak Leaf Cluster OM Operations Module O&M
Operation and Maintenance OMA (1) Office of Military Affairs (CIA); (2) Operations and Maintenance, Army
OMAR Operations and Maintenance Army Reserve OMAT Ocean Measurements and Array Technology OMB
Office of Management and Budget OMC Office of Military Cooperation OMC-K Office of Military
Cooperation-Kuwait OMG Operational Maneuver Group (FSU) OMNG Operation and Maintenance, National
Guard OMOB Offensive Missile Order of Battle OMV Orbital Maneuvering Vehicle ON Original
Negative (film)
ONA Australia Office of National Assessments ONC Operational Navigation Chart ONI
Office of Naval Intelligence ONIR Overhead Non-Imaging Infrared ONLEXKED On-Line Five Year
Exercise Schedule System ONOO Outline NATO Operational Objective ONPG
Operational Nuclear Planning Group ONR Office of Naval Research ONS Operational Needs Statement
ONUC United Nations Operations in the Congo ONUMOZ United Nations Operations in Mozambique ONUSAL
United Nations Observer Mission in El Salvador OOA
Out of Area OOB Order of Battle OODA Observation, Orientation, Decision and Action OOK
On/Off Keying OOP Object Oriented Programming OOTW Operations Other Than War OP (1)
Observation Post; (2) Operation; (3) Operational OPA Other Procurement Activity OP3 Overt
Peacetime PSYOP Program OPCC Offutt Processing and Correlation Center OPCEN Operations Center
OPCODES Operational Codes OPCOM
Operational Command OPCON Operational Control OPDEC Operational Deception
OPEC Organization of Petroleum-Exporting Countries OPELINT Operational Electronic Intelligence
OPF Orbiter Processing Facility OPFAC Operational Facilities OPFIS
Operational Foreign Instrumentation Signals OPFOR Opposing Forces OPG Operations Planning Group
OPI Office of Primary Interest OPIC (1) Overseas Processing and Interpretation Center; (2) Overseas
Private Investment Corporation OPIC-A Overseas Processing and Interpretation Center - Asia OPINT
Optical Intelligence OPINTEL Operational Intelligence OPLAN
Operations Plan OPM Office of Personnel Management Opn(s) Operation(s) OPNAV
Office of the Chief of Naval Operations OPNAVINST OPNAV Instruction OPNOTES
Operational Notes OPORDER/OPORD Operations Order OPPAR Opposing Army OPR
Office(r) of Primary Responsibility; Officer Performance Report OPREP Operations Report
OPREPS Operational Reporting System OPS/OPNS/OP Operations OPS/INTEL Operations Intelligence
OPSDEPS Operations Deputies (JCS) OPSCO Operations Coordinator
OPSCOM Operations Committee OPSCOMM Operations Secure Communications OPSEC Operations Security
OPSKAN Open Skies Advanced Notice OPSNOTE Operations Note OPT (1) Optional Modification; (2)
Operations Planning Team OPTEMPO Tempo of Operations OPTEVFOR
Operational Test and Evaluation Force OPTINT Optical Intelligence OPTIR Optical Infrared
OPUS OBU Program Upgrade System OR (1) Operational Requirements; (2) Operationally Ready ORBINT
Orbital Intelligence ORBIT System Development Corporation Data Search Service ORCON (1)
Dissemination and Extraction of Information Controlled by Originator; (2) Originator Controlled ORD
Operational Requirements Document ORE Operational Readiness Exercise ORF Official Representation
Fund Org Organization ORI
Operational Readiness Inspection OS (1) Operating System; (2) Cryptologic Officer O&S
Operations & Support OSA Open Systems Architecture OSAP Ocean Surveillance Assessment Program
OSAS Operational Space Application System OSC (1) Office of the Security Council; (2) Operational
Support Company; (3) Operations Support Center; (4) On-Scene
Commander OSCAR Optical Submarine Communications by Aerospace Relay OSCARCP
Operations Support Center and Rear Command Post (Korea) OSD Office of the Secretary of Defense
OSD(C) OSD (Comptroller) OSF Open Systems Foundation OSI (1) Operating Systems Incorporated
(Contractor); (2) On-Site Inspection; (3) Off-Shore Islands; (4) Office of Special Investigations; (5) Open System
Interconnect; (6) Office of Special Investigations; (7) Open System Interconnect OSIA On Site Inspection
Agency OSINT Open Source Intelligence OSIS
(1) Ocean Surveillance Information System; (2) Open Source Information Service OSP (1) Ocean
Surveillance Product; (2) Operational Support Package OSPRA Ocean Surveillance Pattern Recognition
Algorithm OSO Operational Support Office OSP Operational Support Packages
OSS (1) Operational Storage Site; (2) Operations Support Squadron; (3) Operations Support System OSSC
On-Line System Support Center OST Outer Space Treaty OSTP Office of Science and Technology Policy
OT (1) Overseas Territories; (2) Overtime; (3) Operational Test; (4) One Time; (5) Operations Team OT&E
Operational Test and Evaluation OTA
(1) Operational Tasking Authority; (2) Office of Technology Assessment OTAD Over-The-Air Key
Distribution OTAR Over-The-Air Rekeying OTAT Over-The-Air Transmission/Transfer
OTAU Over-The-Air Updating OTC (1) Officer in Tactical Command; (2) Over-the-Counter
OTCIXS (1) Officer in Tactical Command Information Exchange Subsystem; (2) OTC Information Exchange System
OTE See OT&E OTEA Operational Test and Evaluation Agency (U.S. Army) OTH Over-the-Horizon
OTH-B Over-the-Horizon Backscatter OTH-R Over-the-Horizon Radar OTH-T Over-the-Horizon
Targeting OTIS Operational Targeting Intelligence System
OTM On the Move OTP One-Time Pad OTS (1) One-Time Source; (2) Officer Training School; (3)
Oahu Telecommunications System OTT One-Time Tape OTU Operational Training Unit OUO
Official Use Only OUSDRE Office of the Under Secretary of Defense, Research &
Engineering OUTS Operational Unit Transportable System OVOP Overt Operational Proposal OVPF
Object-Oriented Vector Product Format |
