| A-G | Air-to-Ground |
| AAI | Advanced Communication Technology ATM (Asynchronous Transfer Mode) Internetwork |
| AAR | After Action Review |
| ABCS | Army Battle Command System |
| ABPBD | Air Base Port Biological Detection |
| ACC | Air Combat Command |
| ACOM | Atlantic Command |
| ACP | Army Classified Program |
| ACTD | Advanced Concept Technology Demonstration |
| ADJPO | DARPA DISA Joint Project Office |
| ADS | Advanced Distributed Simulation |
| ADSAM | Air-Directed Surface-to-Air Missile |
| AFATDS | Air Force Airborne Tactical Data System |
| AJP | Advanced Joint Planning |
| ALISS | Advanced Lightweight Influence Sweep System |
| AMSAA | Army Materiel Systems Analysis Activity |
| AMTE | Army Mountain Top Experiment |
| ANG | Air National Guard |
| APOD | Air Ports of Debarkation |
| ARDA | Airborne Reconnaissance Data Link Architecture |
| ARG | Amphibious Ready Group |
| ASA | Assistant Secretary of the Army |
| ASARS-2 | Advanced Synthetic Aperture Radar System |
| ASAS-PMO | All Source Analysis System-Program Management Office |
| ASC | Aeronautical Systems Center |
| ASCIET | All Service Combat Identification Evaluation Team |
| ASM | Armored Systems Modernization |
| ASSI | Aerial Scout Sensor Integration |
| AST | Advanced Survivability Technology |
| ASTAMIDS | Airborne Standoff Minefield Detection System |
| AT | Advanced Technology |
| AT/BC | Advanced Technology/Breakfast Club |
| ATACMS | Army Tactical Missile System |
| ATD | Advanced Technology Demonstration |
| ATDNet | Advanced Technology Demonstration Network |
| ATM | Asynchronous Transfer Mode |
| ATR | Automatic Target Recognition |
| AV | Air Vehicle |
| AWACS | Airborne Warning and Control System |
| AWE | Advanced Warfighting Experiment |
| AWE | Aircraft, Weapon, and Electronic |
| C3 | Command, Control, Communications |
| C4I | Command, Control, Communications, Computers, and Intelligence |
| CAD | Computer Aided Design |
| CAM | Computer Aided Manufacturing |
| CARS | Contingency Airborne Reconnaissance System |
| CAS | Close Air Support |
| CAIV | Cost as an Independent Variable |
| CCM | Counter Countermeasure |
| CCSIL | Command Control Software Interface Language |
| CEC | Cooperative Engagement Capability |
| CECOM | Communications-Electronics Command |
| CGS | Common Ground Station |
| CID | Combat Identification |
| CIG/SS | Common Imagery Ground/Surface System Standard |
| CIMMD | Close-In-Man Portable Mine Detector |
| CINC | Commander-in-Chief |
| CINCPAC J3 | Commander-in-Chief Pacific Command |
| CIS | Combat Intelligence System |
| CJTF | Commander, Joint Task Force |
| CMD | Cruise Missile Defense |
| COA | Central Operating Authority
|
| COBRA | Coastal Battlefield Reconnaissance and Analysis System
|
| COE | Core Operating Environment |
| COEA | Cost and Operational Effectiveness Analysis |
| COI | Critical Operational Issue |
| COIC | Combat Operations and Intelligence Center |
| COMHELTACWINGLANT | Commodore of the Helicopter Tactical Wing, Atlantic Fleet |
| COMSAT | Commercial Satellite |
| CONOPS | Concept of Operations |
| CORBA | Common Object Request Broker Architecture |
| COTS | Commercial-Off-the-Shelf |
| CP | Counterproliferation |
| CSS | Combat Service Support |
| CVN | Aircraft Carrier, Nuclear |
| CVS | Combat Vehicle Survivability |
| D/DMSO | Director, Defense Modeling and Simulation Office |
| DARO | Defense Airborne Reconnaissance Office |
| DARPA | Defense Advanced Research Projects Agency |
| DASD/C3I | Deputy Assistant Secretary of Defense/Command, Control, Communications, and Intelligence |
| DBBL | Dismounted Battlespace Battle Lab |
| DCP | Distributed Collaborative Planning |
| DDM | Deputy Demonstration Manager |
| DDR&E | Director, Defense Research and Engineering |
| DEM/VAL | Demonstration/Validation |
| DET | Distributed Explosive Technology System |
| DIS | Distributed Interactive Simulation |
| DISA | Defense Information Systems Agency |
| DISN | Defense Information Systems Network |
| DM | Demonstration Manager |
| DMSO | Defense Modeling and simulation Office |
| DMZ | Demilitarized Zone |
| DNA | Defense Nuclear Agency |
| DPG | Dugway Proving Ground |
| DPICM | Dual Purpose Improved Conventional Munitions |
| DPM | Deputy Project Manager |
| DR | Design Review |
| DRB | Division Ready Brigade |
| DSABL | Depth and Simultaneous Attack Battle Lab |
| DSI | Defense Simulation Internet |
| DSM | "Don't Shoot Me" |
| DT&E | Development, Test, and Evaluation |
| DTOML | Doctrine, Organization, Tactics, Materiel, and Logistics |
| DUSD(AT) | Deputy Under Secretary of Defense (Advanced Technology) |
| I&W | Indications and Warning |
| IA | Imagery Analysts |
| IADS | Integrated Air Defense Systems |
| IBAD | Interim Biological Agent Detector |
| ICE | Interdiction and Counter Fire Exercise |
| IDM | Improved Data Modem |
| IDR | Initial Design Review |
| IDS | Information Dissemination Server |
| IEC | Intelligence, Electronics, Communications |
| IMF | Intelligent Mine Field |
| INS | Inertial Navigation System |
| IOC | Initial Operating Capability |
| IOD | Integration and Operational Demonstration |
| IOE | Initial Operational Evaluation |
| IPB | Intelligence Preparation of Battlefield |
| IPF | Integrated Processing Facility |
| IPPD | Integrated Product and Process Development |
| IPPDT | Integrated Product and Process Development Team |
| IPT | Integrated Product Team |
| IREMBASS | Improved Remotely Monitored Battlefield Sensor System |
| ISO | Information Systems Office |
| IW | Information Warfare |
| IWRT | Information Warfare Red Team |
| ITAG | Inertial Terrain-Aided Guidance |
| J-3 | Joint Staff Operations |
| JAC | Joint Analysis Center |
| JAMC | Joint Amphibious Mine Clearance System |
| JC2WC | Joint Command and Control Warfare Center |
| JCIDO | Joint Combat Identification office |
| JCM | Joint Countermine |
| JCOS | Joint Countermine Operational Simulation |
| JDISS | Joint Deployable Intelligence Support System |
| JFC | Joint Force Commander |
| JIC | Joint Intelligence Center |
| JL ACTD | Joint Logistics Advanced Concept Technology Demonstration |
| JMCIS | Joint Maritime Combat Information System |
| Joint-STARS | Joint Surveillance Target Attack Radar System |
| JPO | Joint Project Office |
| JPO-BD | Joint Project Office for Biological Defense |
| JPSD | Joint Precision Strike Demonstration |
| JROC | Joint Requirements Oversight Council |
| JRTC | Joint Readiness Training Center |
| JS | Joint Staff |
| JSIMS | Joint Simulation System |
| JSIPS/JSIPS N | Joint Services Imagery Processing System/Joint Services Imagery Processing System Navy |
| JTF | Joint Task Force |
| JTFEX | Joint Task Force Exercise |
| JTIDS | Joint Tactical Information Distribution System |
| JWARS | Joint Wargaming System |
| JWCA | Joint Warfare Capability Assessment |
| JWCO | Joint Warfighting Capability Objectives |
| JWFC | Joint Warfighting Center |
| JWID | Joint Warfighting Interoperability Demonstration |
| MAE UAV | Medium Altitude Endurance Unmanned Aerial Vehicle |
| MAGR | Miniaturized Airborne GPS Receiver |
| MAGTF | Marine Corps and Army Echelon Corps Task Force |
| MALD | Miniature Air-Launched Decoy |
| MALV | Miniature Air-Launched Vehicle |
| MCE | Mission Control Element |
| MCM | Mine Countermeasure |
| MEA | Munitions Effectiveness Assessment |
| MICOM | Missile Command |
| MIES | Modernized Intelligence Exploitation System |
| MIPR | Military Interdepartmental Purchase Request |
| MLRS | Multiple Launch Rocket System |
| MOA | Memorandum of Agreement |
| MOE | Measures of Effectiveness |
| MOP | Measures of Performance |
| MOS | Measures of Success |
| MOU | Memorandum of Understanding |
| MRL | Multiple Rocket Launch |
| MSC | Military Sealift Command |
| MSE | Mobile Subscriber Equipment |
| MSL | Mean Sea Level |
| NAS | Naval Air Station |
| NATACMS | Navy Version Army Tactical Missile System |
| NAVSEA | Naval Sea Systems Command |
| NAVWAR | Navigation Warfare |
| NAWC | Naval Air Weapons Center |
| NBC | Nuclear, Biological, and Chemical |
| NCA | National Command Authority |
| NCTI | Non-Cooperative Target Identification |
| NDI | Non-Developmental Item |
| NET | Navwar Evaluation Team |
| NIIRS | National Imagery Interpretation Rating Scale |
| NMJIC | National Military Joint Intelligence Center |
| NMRS | Near-Term Mine Reconnaissance System |
| NPIC | National Photographic Interpretation Center |
| NSA | National Security Agency |
| NTM | National Technical Means |
| O&O | Operational and Organizational |
| O&M | Operations and Maintenance |
| O&S | Operation and Support |
| OASD | Office of the Assistant Secretary of Defense |
| OJCS | Office of the Joint Chiefs of Staff |
| OM | Operational Manager |
| OMFTS | Operational Maneuver From the Sea |
| ONR | Office of Naval Research |
| OOD | Object Oriented Design |
| OOP | Object Oriented Programming |
| OPCON | Operational Control |
| OPFOR | Opposition Force |
| OPLAN | Operations Plan |
| OPORD | Operations Order |
| ORD | Operational Requirements Document |
| ORSMC | Off-Route Smart Mine Clearance System |
| OSD | Office of the Secretary of Defense |
| OTA | Operational Test Agency |
| OT&E | Operational Test and Evaluation |
| PAC-3 | Patriot Advanced Capability 3 |
| PDS | Processing and Display System |
| PE | Program Element |
| PEO (CU) | Program Executive Office |
| PGMM | Precision Guided Mortar Munition |
| PLAID | Precision Location and Identification |
| PLGR | Precision Lightweight GPS Receiver |
| PLV | Platoon Lender Vehicle |
| PMO | Program Management Office |
| POC | Point of Contact |
| POM | Program Objectives Memorandum |
| PRC-MRL | Precision/Rapid Counter-Multiple Rocket Launch |
| PSTS | Precision SIGINT Targeting System |
| S&T | Scientific and Technical |
| SA | Situational Awareness |
| SABER | Situational Awareness Beacon with Reply |
| SADL | Situational Awareness Data Link |
| SAE | Service Acquisition Executive |
| SAIP | Semi-Automated IMINT Processing |
| SAR | Synthetic Aperture Radar |
| SAM | Surface-to-Air Missile |
| SATNAV | Satellite Navigation |
| SBIR | Small Business Innovative Research |
| SE | Synthetic Environment |
| SEAD | Suppression of Enemy Air Defense |
| SEID | System Engineering, Integration, and Demonstration |
| SENGAP | Small Engine Advanced Program |
| SF | Synthetic Forces |
| SIL | (UAV) Systems Integration Laboratory |
| SINCGARS | Single Channel Ground and Airborne Radio System |
| SIP | System Improvement Program |
| SM-2 | Standard Missile 2 |
| SOCOM | Special Operations Command |
| SPMAGTF | Special Purpose Marine Air Ground Task Force |
| SPOD | Sea Ports of Debarkation |
| STOW | Synthetic Theater of War |
| STOW-E | Synthetic Theater of War-Europe |
| TAC | Tactical Air Control |
| TADIL-J | Tactical Data Information Link-J |
| TAF | Tactical Air Force |
| TAFS | Combat Stores Ship |
| TBA | Theater Battle Arena |
| TBD | To Be Determined |
| TBM | Theater Ballistic Missile |
| TD | Technology Demonstration |
| TDDS | TRAP Data Dissemination System |
| TEL | Transporter Erector Launcher |
| TF XXI | Task Force XXI |
| TI | Target Identification |
| TLAM | Tomahawk Land Attack Missile |
| TMD | Theater Missile Defense |
| TOC | Tactical Operations Center |
| TOIPT | Technical Oversight IPT |
| TRADOC | Training and Doctrine Command |
| TRAP | Tactical Receive Equipment and Related Application |
| TTP | Tactics, Techniques, and Procedures |
| TUAV | Tactical Unmanned Aerial Vehicle |