| Abkürzung | Bedeutung |
| A | Advanced, American, Amplitude, Analog, Application, Architecture, Area, Association |
| A2DP | Advanced Audio Distribution Profile (Bluetooth) |
| A4E | Anmelden -- 4 Tage abwarten -- editieren (Wikipedia) |
| AA | Access Authorization |
| AA | Aiming Algorithm |
| AA | Arbitrary Access |
| AA | Assistant Administrator |
| AA | Audits + Assessments |
| AA | Auto Answer |
| AA | Antialiasing |
| AAA | Adaptive Anti-Aliasing |
| AAA | authentication, authorization and accounting, siehe Triple-A-System |
| AAAA | Aussuchen -- Auspacken -- Anpassen -- Anwenden |
| AAAAAA | Association for the Abolition of Abused Abbreviations and Asinine Acronyms |
| AAAI | American Association of Artificial Intelligence |
| AAB | All-to-All Broadcast |
| AAB | Application Anchor Block |
| AAC | Advanced Audio Coder |
| AAC | Apple Assistance Center |
| AAC | Advanced Audio Coding |
| AAC+ | Advanced Audio Coder/Coding Plus |
| AACD | Academic Administrative Computing Services |
| AACE | Association for the Advancement of Computing in Education |
| AACLC | Advanced Audio Coder/Coding Low Complexity |
| AACR | Anglo-American Cataloging Rules |
| AACS | Ann Arbor Computer Society |
| AACS | Asynchronous Address Communication System |
| AACS | Automated Access Content/Control System |
| AACS | Automated Analog Circuit Synthesis |
| AACS | Advanced Access Content System |
| AACSLA | AACS LA: Advanced Access Content System Licensing Administrator |
| AAD | Analog Alignment Diskette |
| AAD | Address Adder |
| AADP | Administrative Automatic Data Processing |
| AAE | Allgemeine Anschalt-Erlaubnis |
| AAE | Automatische Anrufeinrichtung |
| AAF | Adjustable Active Filter |
| AAFID | Autonomous Agent For Intrusion Detection |
| AAIC | Accounting Authority Identification Code |
| AAL | Absolute Assembly Language |
| AAL | Ambient Assisted Living |
| AAL | Asynchronous Transfer Mode Adaption Layer |
| AAL | ATM Adaptation Layer |
| AALPDU | AAL Protocol Data Unit |
| AAM | Automatic Acoustic Management |
| AAM | ATA/ATAPI Architecture Model oder Automatic acoustic management |
| AAMOF | As A Matter Of Fact (Slang) |
| AAN | Associated Account Number |
| AAP | Advanced Adaptive Protocol |
| AAP | Applications Access Point |
| AAP | Association of American Publishers |
| AAPI | Audio Applications Programming Interface |
| AAR | Anfangsadressregister |
| AARP | AppleTalk Address Resolution Protocol |
| AAS | All-to-All Scatter |
| AAS | Arithmetic Assignment Statement |
| AASP | ASCII Asynchronous Support Package |
| AAT | Average Access Time |
| AATIS | Arbeitskreis Amateurfunk und Telekommunikation in der Schule |
| AATP | Authorized Academic Training Program |
| AAUI | Apple Attachment Unit Interface |
| AAVD | Automatic Alternate Voice Data |
| AB | Anrufbeantworter |
| AB | Ausser Betrieb |
| ABAP | Advanced Business Application Programming (SAP) |
| ABB | ASEA Brown Boveri (Schweiz) |
| ABC | Atanasoff-Berry Computer |
| ABC | Abstract Base Class |
| ABC | Advanced BASIC Computer |
| ABC | American Broadcasting Company |
| ABC | Applications of Broadband Communication |
| ABC | Appropriate Byte Counting |
| ABC | Approximate Bayesian Computation |
| ABC | Automatic Brightness Control |
| ABCD | Add, Browse, Change, Delete |
| ABCS | Advanced Business Communications via Satellite |
| ABD | Automatic Baudrate Detection |
| ABE | Agent Building Environment |
| ABEND | Abnormal End |
| ABF | Adobe Binary Screen Font |
| ABG | abgehend |
| ABG | Access Border Gateway |
| ABG | Ads By Google |
| ABG | Automatisierte Biometriegestuetzte Grenzkontrolle |
| ABI | Application Binary Interface |
| ABIC | Access Bus Industry Group |
| ABIOS | Advanced Basic Input/Output System |
| ABIST | Automatic Built-In Self Test |
| ABK | Arbeitskreis Bildkommunikation |
| ABLE | Adaptive Battery Life Extender |
| ABLE | Agent Building and Learning Environment |
| ABM | Anything But Microsoft |
| ABM | Asynchronous Balanced Mode |
| ABN | Australian Bibliographic Network |
| ABNF | Augmented Backus-Naur Form |
| ABNS | Application Based Network Services |
| ABR | Associativity-Based Routing (protocol) |
| ABR | Automated Beacon Removal |
| ABR | Available Bit Rate |
| ABRD | Automatic Baud Rate Detection |
| ABRS | Automated Book Request System |
| ABS | Address Book Synchronization |
| ABS | Authorized Bearer Services (Exceptions) |
| ABS | Automatic Backup Shutdown |
| ABT | Abort |
| ABT | ATM Block Transfer |
| ABTDT | ATM Block Transfer Delayed Transmission |
| ABTIT | ATM Block Transfer Immediate Transmission |
| ABTS | ASCII Block Terminal Services |
| AC | Alternating Current |
| AC | Access Concentrator |
| AC | Access/Automatic Control |
| AC | Accumulator |
| AC | Advisory Committee |
| AC | Analogue Computer |
| AC | Arc Consistency |
| AC | Audio Code/Codec/Coding |
| AC | Authority Center |
| AC | Auto Check |
| AC97 | AC'97: Audio Codec '97 (Intel) |
| ACA | Application Control Architecture (DEC) |
| ACAD | AC Adaptor |
| ACAP | Application Configuration Access Protocol |
| ACAP | Automated Content Access Protocol |
| ACAS | Application Control Architecture Services |
| ACATS | Advisory Committee on Advanced Television Systems |
| ACC | Abnormal Condition Control |
| ACC | Access |
| ACC | Accumulator |
| ACC | Adaptive Cruise Control |
| ACC | Area Communication Controller |
| ACC | Adaptive Computing Controller (SAP) |
| ACCMAIL | Accessing the Internet via Email |
| ACCU | Association of C and C++ Users |
| ACD | Automated/Automatic Call Director/Distributor/Distribution |
| ACDF | Access Control Decision Function |
| ACDG | Automatic Call Distribution Group |
| ACDI | Asynchronous Communication Device Interface |
| ACDP | Australian Committee on Data Processing |
| ACE | A Compact Evaluated Nuclear Data File |
| ACE | Access Control Encryption/Entry |
| ACE | Adaptive Communication Environment |
| ACE | Additional Core Enhancements |
| ACE | Adobe Certified Expert |
| ACE | Advanced Computing Environment (SCO) |
| ACE | Adverse Channel Enhancement |
| ACE | Automatic Calling Equipment |
| ACE | ASCII Compatible Encoding oder Access Control Entry (Eintrag in der Access Control List) |
| ACELP | Algebraic Code Excited Linear Prediction |
| ACF | Advanced Communications Function |
| ACF | Access Control Field |
| ACF | Admission Confirmation |
| ACF | Attribute Configuration File |
| ACFC | Address and Control Field Compression |
| ACFM | Alternating Current Frequency Modulation |
| ACH | Automeated Clearing House |
| ACI | Access Control Information/Interface |
| ACI | Adjacent Channel Interference |
| ACI | Advanced Chip Interconnection |
| ACI | Advanced Computing Initiative |
| ACI | American Computer Innovators |
| ACI | Application Communication Interface |
| ACIA | Access Control Inner Area |
| ACIA | Asynchronous Communication Interface Adapter |
| ACIAS | Automated Calibration Internal Analysis System |
| ACID | Add, Change, Inquire, Delete |
| ACID | Analysis Console for Intrusion Databases |
| ACID | Atomicity, Consistency, Isolation, Durability |
| ACIS | American Committee for Interoperable Systems |
| ACK | Acknowledgement |
| ACK | Acknowledge |
| ACK | Amsterdam Compiler Kit |
| ACL | Access Control List |
| ACL | Account Classification |
| ACL | Advanced Computing Laboratory |
| ACL | Agent Communication Language |
| ACL | Application Connectivity Link |
| ACL | Asynchronous Connectionless Link |
| ACLS | Accounting Class Packet Services |
| ACLU | American Civil Liberties Union, USA |
| ACM | Association for Computing Machinery, USA |
| ACM | Audio Compression Manager |
| ACME | Assembling Configuration Management Environments |
| ACMS | Application Control Management System |
| ACNS | Academic Computing and Networking Services |
| ACNS | Application and Content Networking System (Cisco) |
| ACNS | Applied Cryptography and Networking Security |
| ACNS | Automated Copyright Notice System |
| ACONET | Akademisches Computer-Netz, Oesterrreich |
| ACOPS | Automatic CPU Overheat Prevention System |
| ACOS | Additional Call Offering Service |
| ACP | Analog Copy Protection |
| ACP | Ancillary Control Program |
| ACP | Automatic Channel Programming |
| ACP | Auxiliary Control Process |
| ACP | Average CPU Power |
| ACPA | Anticybersquatting Consumer Protection Act, USA |
| ACPI | Advanced Configuration and Power Interface |
| ACPICA | Advanced Configuration and Power Management Interface Component Architecture |
| ACR | Advanced Communication(s) Riser oder Automatic carriage return oder Attenuation To Crosstalk Ratio |
| ACR | Advanced Communication Riser |
| ACR | Allowed Cell Rate |
| ACR | Attenuation to Crosstalk Ratio |
| ACRG | Access Code Restriction Group |
| ACROSS | Automated Cargo Release and Operations Service System |
| ACS | Automatic Class Selection |
| ACS | Access Control Server/Set/System |
| ACS | Account Control System |
| ACS | Advanced Communication/Computer System |
| ACS | Aldus Color File |
| ACS | Anti Curl System |
| ACS | Asynchronous Communication Server |
| ACSA | Access Control Specific Area |
| ACSE | Association Control Service Element/Entity |
| ACSK | Adaptive Code Shift Keying |
| ACSNET | Australian Computer Science Network |
| ACSR | Automatic Customer Station Rearrangement |
| ACSS | Audio Cascading Style Sheet |
| ACT | Advanced Communication for Training |
| ACT | Applied Computerized Telephony (HP) |
| ACTA | America's Carriers Telecommunication Association |
| ACTA | Anti Counterfeiting Trade Agreement |
| ACTI | Advanced Computational Technology Initiative |
| ACTL | Access Customer Terminal Location |
| ACTLU | Active Logical Unit |
| ACTPU | Active Physical Unit |
| ACTS | Advanced Communications Technologies and Services |
| ACTS | Advanced Communications Technology Satellite |
| ACTS | Automated Computer Time Service (NIST) |
| ACTT | Advanced Communication and Timekeeping Technology |
| ACTU | Active User |
| ACTV | Advanced Compatible Television |
| ACU | Access Control Unit |
| ACU | Acknowledgement Signal Unit |
| ACU | Automatic Calling Unit |
| ACVC | Ada Compiler Validation Capacity |
| ACWT | Analog Call Waiting |
| AD | Active Directory |
| AD | A/D: Analog/Digital |
| AD | Administrative Domain |
| AD | Assignment Date |
| ADA | Adobe Developers Association |
| ADA | Applied Decision Analysis |
| ADA | Automatic Data Acquisition |
| ADABAS | Adaptable Database System |
| ADAIC | Ada Information Clearinghouse |
| ADAM | Active Directory Application Mode |
| ADAM | Art, Design, Architecture + Media Information Gateway |
| ADAM | Automatischer Datenmessplatz |
| ADAPT | Application Design for Analytical Processing Technologies |
| ADAT | Alesis Digital Audio Tape |
| ADB | Apple Desktop Bus oder Android Debug Bridge |
| ADB | Authentication Database |
| ADC | Analog Digital Converter |
| ADC | Adaptive Data Compression |
| ADC | Add with Carry |
| ADC | Analogue to Digital Converter |
| ADC | Apple Developer Connection |
| ADC | Apple Display Connector |
| ADC | Application Development Classes |
| ADCCP | Advanced Data Communications Control Procedures |
| ADCCP | Advanced Data Communication Control Procedure/Protocol |
| ADD | Architecture Design Document |
| ADD | Automatic Document Detection |
| ADD | Adapter Device Driver |
| ADDMD | Administration Directory Management Domain |
| ADDS | Active Directory Domain Services (Erweiterung des früheren Verzeichnisdienstes ADS von Microsoft) |
| ADDX | Assoziation Deutschsprachiger DXer |
| ADE | Advanced Document Engineering |
| ADE | Application Development Environment |
| ADEOS | Advanced Earth Observation Satellite, Japan |
| ADEPA | Agence Nationale pour le Developpement de la Production Automatisee |
| ADF | Active Dynamic Filtering |
| ADF | Adaptor Description File |
| ADF | Address Distribution Facility |
| ADF | Amiga Disk File |
| ADF | Amsterdam Density Functional |
| ADF | Application Development Facility/Framework |
| ADF | Arbeitskreis Digitale Fotografie |
| ADF | Assume Good Faith (Wikipedia( |
| ADF | Auto-lead Data Format |
| ADF | Automatic Direction Finder/Finding |
| ADF | Automatic Document Feed/Feeder |
| ADF | Automatically Defined Function |
| ADFS | Acorn/Advanced Disc File/Filing System |
| ADI | Agence de l'Informatique |
| ADI | Autodesk Device Interface |
| ADIOS | Automated Download and Installation of Operating Systems |
| ADISS | Analytical Data Interchange + Storage Standards |
| ADL | Above Detection Limit |
| ADL | Address Data Latch |
| ADL | Adventure Definition Language |
| ADLAT | Adaptive Lattice Filter |
| ADLC | Adaptive Lossless Data Compression |
| ADLC | Asynchronous Data Link Control |
| ADM | Add/Drop-Multiplexer |
| ADM | Aggregate Data Manager |
| ADM | Application Development Modul |
| ADM | Arrow Diagram Method |
| ADM | Asynchronous Disconnected Mode |
| ADM | Automatic Drive Maintenance |
| ADMACS | Apple Document Management And Control System |
| ADMD | Administrative/Administration Management Domain (X.400) |
| ADN | Aircraft Data Network |
| ADO | ActiveX Data Objects |
| ADP | Automated Data Processing |
| ADP | Administrative/Automatic Data Processing |
| ADP | AOLserver Dynamic Pages |
| ADP | Automatic Data Processing |
| ADPCM | Adoptive Differential Pulse Code Modulation |
| ADPCM | Adaptive Delta/Differential Pulse Code Modulation/Modulator |
| ADR | Address |
| ADR | Advanced Digital Recording |
| ADRC | Adaptive Dynamic Range Coding |
| ADRD | Automatic Data Rate Detection |
| ADRES | Automatic Dynamic Range Expansion System |
| ADS | Active Directory Service |
| ADS | Aktiver Diagnose-Stecker |
| ADS | Alternate Data Stream |
| ADS | Application Development Solutions/System |
| ADS | AutoCAD Development System |
| ADS | Automated Data Service |
| ADS | Automatic Distribution System |
| ADS | Automated Deployment Service oder Alternate Data Streams |
| ADSC | Adobe Document Structuring Conventions |
| ADSC | Address Status Changed |
| ADSI | Active Directory Services Interface |
| ADSI | Active/Advanced Directory Service Interface |
| ADSI | Analog Display Services Interface |
| ADSL | Asymmetric Digital Subscriber Line |
| ADSL | Asymmetric(al) Digital Subscriber Line/Loop |
| ADSM | Adstar Distributed Storage Manager (IBM) |
| ADSP | Author Domain Signing Practices |
| ADSP | AppleTalk Data Stream Protocol |
| ADSR | Attack, Decay, Sustain, Release |
| ADT | Abrechnungsdatentraeger |
| ADT | Abstrakter Datentyp |
| ADT | Advanced DRAM Technology |
| ADT | Application Data Type |
| ADTV | Advanced Definition Television |
| ADU | Automatic Dialing Unit |
| ADVISE | Analysis, Dissemination, Visualization, Insight, and Semantic Enhancement |
| ADX | Automatic Data Exchange |
| ADXVERZ | Amtliches Verzeichnis der DATEX-Teilnehmer |
| AE | Above or Equal |
| AE | Application Entity |
| AEB | Analogue Expansion Bus |
| AEC | Architectural and Engineering Construction |
| AEC | Ars Electronica Center |
| AEC | Availability Environment Classification |
| AECG | Advanced Embedded Codes Gateway |
| AED | Abfrageeinrichtung fuer Datenverkehr |
| AEEC | Airlines Engineering Electronics Committee |
| AEG | Allgemeine Electricitaets-Gesellschaft |
| AEH | Advanced Encapsulated Hypertext |
| AEI | Additional Equipment Interface |
| AEIOUS | Advanced Enhanced Interface for Open Universal Systems |
| AEM | Acoustic Emission Monitoring |
| AEM | Asynchronous Event Mechanism |
| AEM | Automatic Emulation Management |
| AEMS | Automated Energy Management System |
| AEN | Acknowledgment Error Notification |
| AEP | Application Environment Profile (Posix) |
| AEP | AppleTalk Echo Protocol |
| AEPD | Agencia Espanola de Proteccion de Datos |
| AER | Advanced Error Reporting |
| AES | Application Environment Specification/Services |
| AES | Advanced Encryption Standard |
| AET | Abstract Window Toolkit |
| AET | Advanced Educational Technology |
| AET | Application Entity Title |
| AF | Auxillary-Carry Flag |
| AF | Advanced Format (harddisk technology) |
| AF | Alternative/Audio Frequency |
| AF | Anzunehmender Fehler |
| AF | Auxiliary Carry Flag |
| AFA | Accelerated File Access |
| AFA | Association des Fournisseurs d'Acces et de Services Internet |
| AFAIAA | As Far As I Am Aware (Slang) |
| AFAIC | As Far As I am Concerned (Slang) |
| AFAIK | As Far As I Know (Slang) |
| AFAIKT | As Far As I Know Today (Slang) |
| AFAIR | As Far As I Remember (Slang) |
| AFB | Adobe Font Binary |
| AFC | Automatic Frequency Control |
| AFC | Antiferro-magnetically Coupled (media) |
| AFC | Automatic Font Change |
| AFCCU | Advanced Function Common Control Unit |
| AFD | Advanced Format Drive |
| AFD | Afd: Article for deletion (Wikipedia) |
| AFD | Automatic File Distribution |
| AFDM | Advanced Fluid Dynamics Model |
| AFDW | Active Framework for Data Warehousing |
| AFDX | Avionics Full-Duplex Switched Ethernet |
| AFE | Analog Front End |
| AFEXT | Alien Far End Crosstalk |
| AFF | Adaptive Feed Forward |
| AFFS | Amiga Fast File System |
| AFH | Adaptive Frequency Hopping |
| AFI | Authority and Format Identifier |
| AFII | Association for Font Information Interchange |
| AFIN | Association Francaise des Informaticiens |
| AFIPS | American Federation of Information Processing Societies |
| AFIRM | Automated Fingerprint Image Reporting and Match |
| AFIS | Automated Fingerprint Identification System |
| AFJ | April Fool's Joke (Slang) |
| AFK | Away from Keyboard |
| AFM | Adobe Font Manager/Metrics |
| AFM | Audio Frequency Modulation |
| AFN | American Forces Network |
| AFNIC | Association Francaise pour le Nommage Internet en Cooperation |
| AFNOR | Association Francaise de Normalisation |
| AFOD | Angebot fuer Online-Dienste |
| AFP | AppleTalk File Protocol |
| AFP | Advanced Flexible Processor |
| AFP | Advanced Function Presentation/Printing |
| AFP | Apple Filing Protocol |
| AFPL | Aladdin Free Public License |
| AFR | Alternate Frame Rendering |
| AFR | Annualized Failure Rate |
| AFR | Arndt-Ford-Roper Two-pole Fit |
| AFS | Advanced Freephone Service |
| AFS | Alex/Andrew/Advanced File System |
| AFSK | Audio Frequency Shift Keyer/Keying (Modulation) |
| AFT | Adapter Fault Tolerance |
| AFT | Advanced Format Technology |
| AFTEL | Association Francaise de la Telematique Multimedia |
| AFTN | Aeronautical Fixed Telecommunication Network |
| AFTP | Anonymous FTP (Internet) |
| AFU | Afu: Amateurfunk |
| AFUG | Amateurfunkgesetz |
| AFUL | Association francophone des utilisateurs de Linux et des logiciels libres |
| AFUU | Association Franc{c}aise des Utilisateurs d'UNIX |
| AFUUSO | Association Franc{c}aise des Utilisateurs d'UNIX et des Systemes Ouverts |
| AFUV | Amateurfunkverordnung |
| AG | Alternating Gradient |
| AGA | Advanced Graphics Adapter/Architecture |
| AGA | Advanced Graphics Architecture (Amiga-Chipsatz) |
| AGAF | Arbeitsgemeinschaft Amateurfunkfernsehen |
| AGB | Allgemeine Geschaeftsbedingungen |
| AGC | Automatic Gain Control |
| AGCH | Access Grant Channel |
| AGCS | Advanced Graphic Chip Set |
| AGCW | Arbeitsgemeinschaft CW |
| AGDX | Arbeitsgemeinschaft DX e. V., Erlangen |
| AGE | Automatische Gebuehrenerfassung |
| AGESA | AMD Generic Encapsulated Software Architecture |
| AGFMB | Arbeitsgemeinschaft Freier Mailboxen |
| AGFPL | Aladdin Ghostscript Free Public License |
| AGI | Artificial General Intelligence |
| AGI | Asterisk Gateway Interface |
| AGIS | Apex Global Information Services |
| AGL | Adobe Glyph List |
| AGN | Assurable Global Network |
| AGNES | Automatisches GPS-Netz Schweiz |
| AGOF | Arbeitsgemeinschaft Online-Forschung |
| AGP | Accellerated Graphics Port |
| AGP | Accelerated Graphics Port |
| AGP | Advanced Graphics Package (HP) |
| AGPL | Affero General Public License (GNU) |
| AGPS | Assisted Global Positioning System |
| AGRAS | Antiglare Antireflective Antistatic |
| AGS | Aggregation Switch |
| AGU | Address Generation Unit |
| AGUI | Advanced Graphical User Interface |
| AGV | Automatic Guided Vehicle |
| AH | Authentication Header |
| AHB | Advanced High Performance Bus |
| AHC | Advanced High Speed CMOS |
| AHCI | Advanced Host Controller Interface |
| AHDL | Altera Hardware Description Language |
| AHRA | Audio Home Recording Act |
| AHREF | Anchor Hypertext Reference |
| AHT | Apple Hardware Test |
| AHV | Angular Head Velocity |
| AI | Artificial Intelligence |
| AI | Active Interface |
| AI | Adobe Illustrator |
| AI | Analogue Input |
| AIA | Authority Information Access |
| AIA | Application Integrated Architecture (DEC) |
| AIC | AIX Windows Interface Composer |
| AID | Alarm Identification on Demand |
| AIDA | Attention, Interest, Desire, Action |
| AIDS | Activity Information Data System |
| AIDS | Anomaly-based Intrusion Detection System |
| AIDS | Automatic Installation and Diagnostic Service |
| AIFC | Audio Interchange Format Compressed |
| AIFF | Audio Interchange File Format |
| AIFF | Adobe/Audio Interchange File Format |
| AII | Active Input Interface |
| AII | Attachement Individual Identifier |
| AIIM | Association for Information and Image Management |
| AIK | Angewandte Informatik Karlsruhe e. V. |
| AIM | AOL Instant Messenger |
| AIM | Advanced Informatics |
| AIM | Apple, Intel, Motorola |
| AIM | Automatic Interface Management in Medicine |
| AIMB | As I Mentioned Before (Slang) |
| AIML | Artificial Intelligence Markup Language |
| AIMM | AGP In-line Memory Module |
| AIMS | Advanced Information Management System |
| AIMS | Apple Internet Mail Server |
| AIN | Advanced Intelligent Network |
| AIN | Auto Insert Notification |
| AIO | All In One |
| AIO | Annual Inspection + Overhaul |
| AIOD | Automatic Identification of Outward Dialing |
| AIP | Adaptive Internet Protocol |
| AIP | Application Infrastructure Provider |
| AIP | Archival Information Package |
| AIPS | Astronomical Image Processing System |
| AIR | Adobe Integrated Runtime |
| AIR | Architecture Implementation Review |
| AIR | Automated Image and Restore |
| AIS | Account Information Security (Program) |
| AIS | Administrative/Affiliate Information System |
| AIS | Alarm Indication Signal/System |
| AIS | Application Integration Services |
| AIS | Artificial Immune System |
| AIS | Audit Information System (SAP) |
| AIS | Automated Identification/Information System |
| AIS | Autonomous Intelligent System |
| AISB | Association of Imaging Service Bureaus |
| AISI | As I See It (Slang) |
| AISP | Association of Information Systems Professionals |
| AIST | (National Institute of) Advanced Industrial Science and Technology, Japan |
| AIST | Advanced Information System Technology |
| AIST | American Institute of Science and Technology |
| AIST | Automatic Information Station |
| AIT | Advanced Intelligent Tape |
| AIT | Advanced Information Technology |
| AIUI | As I Understand It (Slang) |
| AIW | APPN Implementor's Workshop |
| AIX | Advanced Interactive Executive |
| AJAX | Asynchronous Javascript and XML |
| AJC | Anti-Jitter Circuit |
| AK | Arbeitskreis |
| aka | also known as (bekannt auch unter dem Namen ...) |
| AKA | Also Known As (Slang) |
| AKF | Autokorrelationsfunktion |
| AKI | Arbeitskreis Informatik |
| AKL | Agent Kernel Language |
| AKM | Apogee Kick Motor |
| AKS | Arbeitskreis Schule (in der GUUG) |
| AKSIS | Arbeitskreis Schutz von Infrastrukturen |
| AL | Application Layer |
| AL | Arbitrated Loop |
| AL | Assembly Language |
| AL | Aussagenlogik |
| ALA | (Ethernet) Active Line Access |
| ALA | American Library Association |
| ALAN | Automobile Local Area Network |
| ALAT | Advanced Load Address Table |
| ALB | Adaptive Load Balancing |
| ALC | Arithmetic and Logic Circuit |
| ALC | Automatic Level Control |
| ALDC | Advanced Lossless Data Compression |
| ALE | Address Latch Enable |
| ALE | Address Lifetime Expectancy |
| ALE | Application Link Enabling |
| ALE | Application Linking and Embedding |
| ALEC | Alternative Local Exchange Carrier |
| ALEX | A Lexical Programming Language |
| ALEX | Advertising Link Exchange |
| ALEX | Altlasten-Expertensystem |
| ALEX | Automated/Automatic Labour Exchange |
| ALEX | Automatic Login Executor |
| ALF | Accurate positioning by Low Frequency |
| ALF | Adaptive Loop Filter |
| ALG | Application Level Gateway |
| ALGOL | Algorithmic Language |
| ALI | American Law Institute |
| ALI | Automatic Link Intelligence |
| ALI | Acer Laboratories, Inc. |
| ALIBI | Adaptive Location of Internetworked Bases of Inforamtion |
| ALICE | Artificial Linguistic Internet Computer Entity |
| ALINK | Active Link |
| ALIS | Automatic Link Setup |
| ALIVE | Artificial Life Interactive Video Environment |
| ALIWEB | Archie Like Indexing in the Web |
| ALM | Application Lifecycle Management |
| ALM | Application Loadable Modul |
| ALM | Application Lifecycle Management (u. a. von Borland) |
| ALMA | Algorithm Parallelization for Multicore Architectures |
| ALN | Asynchronous Learning Network |
| ALOE | Apple Library for Object Embedding |
| ALOS | Auto LISP Object System |
| ALP | Assembly Language Preprocessor |
| ALP | Automatic Language Processing |
| ALPM | Aggressive Link Power Management |
| ALRU | Automatic Line Record Update |
| ALS | Advanced Low Power Schottky |
| ALSA | Advanced Linux Sound Architecture |
| ALSR | AquaLogic Service Registry (BEA) |
| ALSR | Automatic Low Speed Recovery |
| ALT | Alternate |
| ALT | Anti Leech Tracker |
| ALU | Arithmetic Logic/Logical Unit |
| ALU | Arithmetisch-logische Einheit (arithmetisch-logische Einheit, Teil einer CPU) |
| ALWR | Arbeitskreis der Leiter Wissenschaftlicher Rechenzentren |
| AM | Amplitudenmodulation |
| AM | Anschlussmodul |
| AM | Anwendungsmodul |
| AM | Application Maintainer (Debian) |
| AMA | Active Member Addressing (Bluetooth) |
| AMA | Automatic Message Accounting |
| AMANDDA | Automated Messaging and Directory Assistance |
| AMASS | Archival Management And Storage System |
| AMB | Advanced Memory Buffer |
| AMBA | Advanced Microcontroller Bus Architecture |
| AMBW | All My Best Wishes (Slang) |
| AMC | Arbitration and Mediation Center |
| AMD | Advanced Micro Devices |
| AMD | Active Matrix Display |
| AMDD | Agile Modelling Driven Development |
| AMDS | Amplitude Modulation Data System |
| AME | Advanced Metal Evaporated |
| AMF | All Media Floppy |
| AMH | Automated Materials Handling |
| AMI | Alternative Mark Inversion |
| AMI | American Megatrends, Inc. |
| AMI | Alternate/Alternative Mark Inversion (Code) |
| AMI | American Microsystems Inc. |
| AMI | Application Messaging Interface |
| AMIC | Advertising Media Internet Center |
| AMIC | AMI-C: Automotive Multimedia Interface Collaboration/Consortium |
| AMIC | Apple Memory-mapped I/O Controller |
| AMIC | Asian Media Information and Communication Centre |
| AML | ACPI Machine Language |
| AML | Acronym Master List |
| AML | Analog Multi-Line Carrier |
| AMLCD | Active Matrix Liquid Crystal Display |
| AMMA | Advanced Memory Management Architecture |
| AMO | Administration and Maintenance Order |
| AMP | Advanced Metal Powder |
| AMP | Asymmetric/Asynchronous Multi Processing |
| AMP | Audio MPEG Player |
| AMPL | A Mathematical Programming Language |
| AMPS | Advanced Mobile Phone Service/System |
| AMQP | Advanced Message Queuing Protocol |
| AMR | Adaptive Mesh Refinement |
| AMR | Adaptive Multi Rate (Audio Codec) |
| AMR | Anisotropic Magnetoresistance |
| AMR | Audio Modem Riser |
| AMRA | Ants-based Mobile Routing Architecture |
| AMRIS | Adhoc Multicast Routing Protocol Utilizing Increasing ID-Numbers |
| AMRR | Adaptive Multi Rate Retry |
| AMS | Access Method Services |
| AMS | American Mathematical Society |
| AMS | Andrew Message System |
| AMT | Active Management Technology (Intel) |
| AMT | Apple Media Toolkit |
| AMTC | Advanced Mask Technology Center |
| AMTC | aMTC: Asymptotic Multiple Turbo Coding |
| AMTEC | Ausstellung fuer Amateurfunktechnik, Elektronik, Computer |
| AMTOR | Amateur Microcomputer Teleprinting Over Radio |
| AMVER | Atlantic/Automatic Merchant Vessel (Emergency) Reporting System |
| AMVER | Automated Mutual Assistance Vessel Rescue System |
| AMX | Abgesetzter Multiplexer |
| AMX | Application Server Management Extensions |
| AMX | Automatic Message Exchange |
| AN | Access Network |
| AN | Accession/Associated Number |
| ANA | Automatic Number Announcement |
| ANAC | Automatic Number Announcement Circuit |
| ANARC | Association of North American Radio Clubs |
| ANDF | Architecture Neutral Distribution Format |
| ANEXT | Alien Near End Crosstalk |
| ANF | Additional Network Feature |
| ANF | Algebraic Normal Form |
| ANFSCD | And Now For Something Completely Different (Slang) |
| ANG | Animated Network Graphics (APNG) |
| ANG | Area News Group |
| ANI | Automatic Number Identification |
| ANIS | Analoger Anschluss an einer ISDN-Vermittlungsstelle |
| ANK | Alphanumeric Keyboard |
| ANK | ankommend |
| ANL | Argonne National Laboratory, USA |
| ANL | Automatic Noise Limiter |
| ANN | Artificial Neural Network |
| ANOVA | Analysis Of Variance (univariate Varianzanalyse) |
| ANP | Advanced Network Processor |
| ANP | Analysis of Patterns |
| ANP | Analytic Network Process |
| ANP | Assistant Numerique Personnel |
| ANP | Automatic Numbering Plan |
| ANR | Advanced/Automatic Network Routing |
| ANR | Artikelnamensraum (Wikipedia) |
| ANRS | Automatic Noise Reduction System |
| ANS | Access Network System |
| ANS | Advanced Networking Services (Intel) |
| ANS | American National Standard |
| ANSA | Advances Network Systems Architecture |
| ANSI | American National Standards Institute |
| ANT | Access Network Transport |
| ANT | Active/Application Name Table |
| ANT | ADSL/Analogue Network Terminator |
| ANT | Advanced Net/Networking Tools |
| ANT | Advanced Networking and Telecommunication |
| ANT | Advanced/Applied Network Technology |
| ANT | Algorithmic Noise Tolerance |
| ANT | Algorithmic Number Theory |
| ANT | Analysis of Network Traffic |
| ANT | Another Neat Tool |
| ANT | Antenna |
| ANTC | Advanced Networking Test Center |
| ANTIOPE | Aquisition Numerique et Televisualisition d'Images Organisees en Page d'Ecriture |
| ANTLR | Another Tool for Language Recognition |
| ANW | International Academic Networking Workshop |
| ANWZPVV | AnwZpvV: Anwendungszeitpunktverschiebungsverordnung |
| AO | Analogue Output |
| AOAC | Always On, Always Connected |
| AOC | Abnormal Operating Condition |
| AOC | ADSL Overhead Control |
| AOC | Advice Of Charge |
| AOCE | Apple Open Collaboration Environment |
| AOD | Advanced Optical Disc |
| AOD | Audio On Demand |
| AODBS | Aspect Oriented Database System |
| AODI | Always On Dynamic ISDN |
| AODV | Ad-hoc On-demand Distance Vector (routing) |
| AOE | Application Operating Environment (AT&T) |
| AOE | ATA over Ethernet |
| AOI | Active Output Interface |
| AOL | America On-Line |
| AOM | Annual Operating + Maintenance (cost) |
| AOP | Aspect Oriented Programming |
| AOP | Aspektorientierte Programmierung |
| AOR | Atlantic Ocean Region |
| AOS | Add Or Subtract |
| AOS | Advanced Operating System |
| AOSD | Aspect Oriented Software Development |
| AOSE | Agent Oriented Software Engineering |
| AOSS | AirStation One-touch Secure System |
| AOT | Absolutely Off Topic (News) |
| AOT | Ahead Of Time (compilation) |
| AOT | Application Object Template/Tree |
| AOW | Asia and Oceania Workshop (OSI) |
| AP | Adjunct/Application Processor |
| AP | Advanced Performance |
| AP | Application/Adjunct Process/Processor/Program |
| AP | Auf Putz (on-wall) |
| AP | Automatic Pagination |
| AP | Access Point |
| APA | All Points Addressable |
| APA | Adaptive Packet Assembly |
| APA | Amateur Press Association |
| APA | Arithmetic Processing Accelerator |
| APAA | Aggressive Packet Adaptive Assembly |
| APAR | Authorized Program Analysis Report (IBM) |
| APAREN | Address Parity Enable |
| APART | Automated Packet Recognition/Translation |
| APB | Advanced Peripheral Bus |
| APC | American Power Conversion |
| APC | Airborne Public Correspondence |
| APC | Android Personal Computer |
| APC | Application Protocol |
| APC | Arbeitsplatzcomputer |
| APC | Association for Progressive Communications |
| APC | Automated Production Protocol |
| APCUG | Association of PC Users Groups |
| APD | Areal Power Density |
| APDA | Apple Programmers and Developers Association |
| APDU | Application Protocol Data Unit |
| APE | Abgesetzte Periphere Einheit |
| APE | Adaptable Persistence Engine |
| APEI | ACPI Platform Error Interface |
| APEX | Advanced Packet Exchange |
| APEX | Application Exchange |
| APF | Active Port Forwarding |
| APG | Automated Password Generator |
| API | Application Program Interface |
| API | Application Program/Programming Interface |
| APIA | Application Program Interface Association |
| APIC | Advanced Programmable Interrupt Controller |
| APID | Anchor Point Identifier |
| APID | Application Process Identifier |
| APID | Audio Packet Identification/Identifier |
| APIM | ATM Interface Port Module |
| APIPA | Automatic Private IP Addressing |
| APL | A Programming Language |
| APL | Abschlusspunkt des Liniennetzes |
| APL | Advanced Programming Languages |
| APL | Apple/Arphic Public License |
| APL | Application Program Library |
| APL | Application/Automatic Programming Language |
| APL | Average Path Length |
| APL2 | A Programming Language 2 (IBM) |
| APM | Advanced Power Management |
| APN | Access Point Name |
| APN | Actual Private Network |
| APNG | Animated Portable Network Graphics |
| APNIC | Asia Pacific Network Information Centre |
| APO | Advanced Planner and Optimizer (SAP) |
| APOL | Alternate Person On Line (Slang) |
| APON | ATM Optical Passive Network |
| APOP | Authenticated Post Office Protocol |
| APP | Application Portability Profile |
| APP | Automatic Page Positioning |
| APPC | Advanced Program-to-Program Communications |
| APPC | Advanced Program to Program Communication/Converter (IBM) |
| APPI | Advanced Peer-to-Peer Internetworking |
| APPN | Advanced Peer-to-Peer Network/Networking (IBM) |
| APR | Access Point Roaming |
| APR | Acoustic Pulse Recognition |
| APR | Apache Portable Runtime (layer, library) |
| APRIL | Active/Passive Radio Interference Lock |
| APRIL | Adaptive Photonic Reflection by Inverted Light |
| APRIL | Advanced Power Recycling by Integrated Logic |
| APRIL | Adverse Psychiatric Reactions Information Link |
| APRIL | Association for Promotion and Research in Linux |
| APRIL | Association pour la Promotion et la Recherche en Informatique libre |
| APRP | Adaptive Pattern Recognition Processing |
| APRS | Automatic Packet/Position Report/Reporting System |
| APS | Active Pixel Sensor |
| APS | Advanced Planning and Scheduling |
| APS | Advanced Printing/Production/Photo System |
| APS | Array Processing System |
| APS | Assembly Programming System |
| APS | Asynchronous Protocol Specification |
| APS | Asynchronous Protocol Specification |
| APS | Auto Pilot System |
| APS | Automatic Position Select |
| APSE | Ada Programming/Project Support Environment |
| APSL | Apple Public Source License |
| APSN | Atlantic Packet Satellite Network |
| APT | Address Pass Through |
| APT | Adobe Postscript Point |
| APT | Advanced Package Tool |
| APT | Advanced Parallel Technology |
| APT | Almost Plain Text |
| APT | Application Program Title |
| APT | Automatically Programmed Tools |
| APTX | APT-X: Audio Processing Technologies Extended |
| APU | Accelerated/Attached Processing Unit |
| APU | Accelerated Processing Unit |
| APWG | Anti Phishing Working Group |
| AQE | Augmented Quad Edge (Datenstruktur zur Speicherung und effizienten Traversierung eins 3D Voronoi-Diagramms) |
| AQL | A Query Language |
| AQL | Acceptable Quality Level |
| AQM | Active Queue Management |
| AR | Access Router |
| AR | Accurate Recording |
| AR | Artificial Reality |
| AR | Aspect Ratio |
| AR | Augmented Reality |
| ARA | Apple/AppleTalk Remote Access |
| ARAG | Antireflective Antiglare |
| ARAP | Apple Remote Access Protocol |
| ARAS | Antireflective Antistatic |
| ARB | Adaptive Rate Based |
| ARB | Architectural/Architecture Review Board |
| ARC | Acceptable Risk Calculator |
| ARC | Acoustic Resonance Control |
| ARC | Advanced RISC Computing |
| ARC | Attached Resources Computing |
| ARCA | Advanced RISC Computing Architecture |
| ARCEP | Autorite de Regulation des Communications Electroniques et des Postes, France |
| ARCNET | Attached Resource Computer/Computing Network |
| ARD | Apple Remote Desktop |
| ARD | Arbeitsgemeinschaft der oeffentlich-rechtlichen Rundfunkanstalten der Bunmdesrepublik Deutschland |
| ARDF | Amateur Radio Direction Finding |
| ARES | Annuaire Recherche Enseignement Superieur |
| ARF | Abuse Reporting Format |
| ARI | Autofahrer Rundfunk Information |
| ARIB | Association of Radio Industries and Businesses, Japan |
| ARIEL | Analysing and Reporting on the Implementation of Electronic Learning in Europe |
| ARIEL | Automated Realtime Investment Exchange Limit |
| ARIN | American Registry for Internet Numbers |
| ARIS | Architecture of Integrated Information Systems |
| ARJ | Admission Reject |
| ARL | Adjusted Ring Length |
| ARL | Association of Research Liberaries, USA |
| ARL | Authority Revocation List |
| ARLL | Advanced Run Length Limited |
| ARM | Account Resource Management |
| ARM | Acorn/Advanced RISC Machine (ARM1, ARM2 ... ARM11) |
| ARM | Administrator's Reference Manual |
| ARM | Advanced RISC Machine |
| ARM | Annotated Reference Manual |
| ARM | Application Response Measurment |
| ARM | Arpanet Reference Model |
| ARM | Asynchronous Response Mode |
| ARM | Advanced RISC Machines Ltd. Oder Application Response Measurement |
| ARMA | Association of Records Managers and Administrators, USA |
| ARMM | Automated Retroactive Minimal Moderation |
| ARMS | Architecture for Reliable Managed Storage |
| ARNE | Automated Remote Network Evaluation |
| ARNS | AppleTalk Remote Network Server |
| AROM | Associative Read Only Memory |
| ARP | Address Resolution Protocol |
| ARP | Adaptive Routing Protocol |
| ARPA | Advanced Research Projects Agency |
| ARPA | Address and Routing Parameter Area (DNS) |
| ARPA | Advanced Research Projects Agency, USA |
| ARPA | Automatic Radar Plotting Aid |
| ARPANET | Advanced Research Projects Agency Network |
| ARPL | Adjust Requested Privilege Level |
| ARPU | Average Revenue Per Unit/User |
| ARQ | Automatic Repeat Request |
| ARQ | Admission Request |
| ARR | Annual Return Rate |
| ARR | Automatic Repeat/Retransmission Request |
| ARRL | American Radio Relay League |
| ARS | Activity Reporting System |
| ARS | Adaptive Rate System |
| ARS | Address Retrieval System |
| ARS | Atomic Resolution Storage |
| ARS | Automatic Route Selection |
| ARS | Adaptive Rate Selection |
| ARSB | Automated Repair Service Bureau |
| ART | Adaptive Reasoning Technology |
| ART | Another Ray Tracer |
| ART | Autorite de Regulation des Telecommunications |
| ARTA | Apple Real Time Architecture |
| ARTIC | A Real-Time Interface Coprocessor (IBM) |
| ARTOB | Amateur Radio Translator on Balloon |
| ARTS | Asynchronous Remote Takeover Server |
| ARTSD | Analog Real Time Synthesizer Daemon |
| ARTT | Asynchronous Remote Takeover Terminal |
| ARU | Audio Response Unit |
| AS | Autonomous System |
| AS | Abstract Syntax |
| AS | Anschlusssatz |
| AS | Application System (IBM) |
| AS | Authentication Server/Service |
| AS2 | ActionScript 2 (Adobe) |
| AS2 | Applicability Statement 2 |
| AS3AP | ANSI SQL Standard Scalable and Portable |
| ASA | Adaptive Security Algorithm |
| ASA | Advanced SCSI Architecture |
| ASA | American Standards Association |
| ASAI | Adjunct Switch Application Interface |
| ASAM | Arbeitskreis zur Standardisierung von Automatisierungs- und Messsystemen |
| ASAP | Any Service/Any Port |
| ASAP | As Soon As Possible (Slang) |
| ASAP | Automatic Switching And Processing |
| ASB | Advanced System Buffering/Bus |
| ASB | Alarm-Signal-Bearbeitung |
| ASC | Accredited Standards Committee (ANSI) |
| ASC | Anti-Spyware Coalition |
| ASC | Auditor Security Collection |
| ASC | Authorized Service/Support Center |
| ASCC | Automatic Sequence Controlled Calculator (IBM) |
| ASCI | Accelerated/Advanced Strategic Computing Initiative |
| ASCII | American Standard Code for Information Interchange |
| ASCIIZ | ASCII String, Zero Terminated |
| ASCOM | Asynchronous Communication Control Program |
| ASD | Adaptive Software Development |
| ASD | Application Structure Database |
| ASD | Automatic Skip Driver |
| ASDF | Another System Definition Facility |
| ASDF | Association of Synchronous Data Formats |
| ASDF | Average Squared Difference Function |
| ASE | Advanced Server Environment |
| ASE | Amplified Spontaneous Emission |
| ASEA | Allmaenna Svenska Electricitets-Aktiebolag, Schweden |
| ASF | Active Movie Streaming Format |
| ASF | Active/Advanced Streaming Format |
| ASF | Advanced Synchronization Facility |
| ASF | Apache Software Foundation |
| ASF | Aspect Source Flag |
| ASG | Advanced Systems Group |
| ASH | Active Session History |
| ASH | Amplifier Sequenced Hybrid |
| ASH | Application Session Handoff |
| ASH | Array Session Handle |
| ASI | Adapter Support Interface (IBM) |
| ASI | Alarm-Signal-Initialisierung |
| ASI | Application Specific Instruction |
| ASIC | Application Specific Integrated Circuit |
| ASIN | Amazon Standard Identification Number |
| ASIO | Audio Stream Input Output |
| ASIP | Application Specific Instruction Set Processor |
| ASIS | Ada Semantic Interface Specification |
| ASIS | American Society for Industrial Security |
| ASIS | American Society for Information Science |
| ASIT | Advanced Security and Identification Technology |
| ASK | Akademische Software Kooperation, Karlsruhe |
| ASK | Amplitude Shift Keying |
| ASL | ACPI (Control Method) Source Language |
| ASL | Adaptive Speed Levelling |
| ASL | Architectural Space Laboratory, Zuerich |
| ASLM | Apple Shared Library Manager |
| ASLR | Address Space Layout Randomization |
| ASM | Abstract State Machine |
| ASM | Any Source Multicast |
| ASM | Application Specific Memory |
| ASM | Automated Storage Management |
| ASME | American Society of Mechanical Engineers |
| ASMP | Asymmetric Multi Processing |
| ASN | Abstract Syntax Notation |
| ASN | Access Stack Node |
| ASN | Autonomous System Number |
| ASN.1 | Abstract Syntax Notation One |
| ASO | Active Sideband Optimum |
| ASO | Address Supporting Organization (ICANN) |
| ASO | Arbitrary Slice Ordering |
| ASO | Automated Systems Operation |
| ASP | Association of Shareware Professionals |
| ASP | Active Server Page/Pages |
| ASP | Advanced Signal Processor |
| ASP | Advanced Simple Profile |
| ASP | Allegiance Site License Program |
| ASP | AppleTalk Session Protocol |
| ASP | Application Service Provider |
| ASP | Attached Support Processor |
| ASP | Authorized Service Provider/Providing |
| ASPEC | Adaptive Spectral Perceptual Entropy Encoding |
| ASPI | Advanced SCSI Programming Interface |
| ASPM | Active State Power Management |
| ASPS | Advanced Signal Processing System |
| ASQ | Automated Software Quality |
| ASR | Automatic Send/Recieve |
| ASR | Ada Software Repository |
| ASR | Address Space Register |
| ASR | Automatic Speech Recognition |
| ASR | Automatic System Recovery |
| ASRG | Anti-SPAM Research Group (IRTF) |
| ASRG | ARC Standard Raster Graphics |
| ASRO | Asociata de Standardizare din Romania |
| ASS | Aural Style Sheet |
| AST | Asynchronous Systems Trap |
| AST | Anwendungsschnittstelle |
| ASTA | Anti Spam Technical Alliance |
| ASTAB | Asychronous Status Board |
| ASTRA | Association Tunesienne des Radio Amateurs |
| ASU | Asynchron/Synchron-Umsetzer |
| ASUG | America's SAP Users' Group |
| ASURO | Another Small and Unique Robot from Oberpfaffenhofen, Germany |
| ASV | Advanced Super View |
| ASX | Advanced Streaming Extended (Microsoft) |
| ASX | Auxiliary Switch Exchange |
| AT | Advanced Technology |
| AT | Attention |
| AT | Advanced/Assistive Technology |
| AT | Atomic Time |
| AT | Attenuator |
| AT&T | American Telephone & Telegraph |
| ATA | AT Attachment |
| ATA | Advanced Technology Attachment (Interface) |
| ATA | Analog Telefon/Terminal Adapter |
| ATAPI | AT Attachment Packet Interface |
| ATB | All Trunks Busy |
| ATC | Adaptive Transform Coding |
| ATC | Address Translation Cache |
| ATC | Advanced Transfer Cache |
| ATC | Application Transaction Counter |
| ATC | ATM Transfer Capability |
| ATCA | Advanced Telecom Computing Architecture |
| ATCP | AppleTalk Control Protocol |
| ATDM | Asynchronous Time Division Multiplexing |
| ATDMA | Advanced/Asynchronous Time Division Multiple Access |
| ATDP | Attention Dial Pulse (Hayes) |
| ATDT | Attention Dial Tone (Hayes) |
| ATE | Automated/Automatic Test/Testing Equipment |
| ATF | Asynchronous Transfer |
| ATF | Automatic Track Finding/Following |
| ATFSM | Ask The Friendly System Manager (Slang) |
| ATH | Abbreviated Trouble History |
| ATH | Attention Hangup (Hayes) |
| ATI | Advanced/Applied Technology Institute |
| ATI | Agence Tunisienne d'Internet |
| ATI | Application Template Interface |
| ATI | Array Technologies Incorporated, Canada |
| ATI | Automatic Transaction Initiation |
| ATIM | Ad-hoc Traffic Indication Map/Message |
| ATIP | Absolute Time In Pregroove |
| ATIS | A Tools Integration Standard |
| ATIS | Automatic Terminal Information Service |
| ATIS | Automatic Transmitter Identification System |
| ATK | Andrew Toolkit |
| ATKIS | Amtliches Topographisch-Kartographisches Informationssystem |
| ATL | Active Template Library |
| ATL | Automatic Tape Library |
| ATLAS | Abreviated Test Language for All Systems |
| ATM | Adobe Type Manager |
| ATM | Asynchonous Transfer Mode |
| ATM | Adobe Type/Typeface Manager |
| ATM | Asynchronous Transfer Mode |
| ATM | At The Moment (Slang) |
| ATM | Automated/Automatic Teller Machine |
| ATM-CC | ATM Crossconnect |
| ATMARP | ATM Address Resolution Protocol |
| ATMP | Ascend Tunnel Management Protocol |
| ATN | Aeronautical Telecommunications Network |
| ATN | A-Teilnehmer |
| ATO | Assemble/Assembly To Order |
| ATOM | Advanced Terminal for Operation and Maintenance |
| ATP | Acceptance Test Procedure |
| ATP | Adaptive Tolerant Protocol |
| ATP | Anti Theft Protection |
| ATP | AppleTalk Transaction Protocol |
| ATPG | Automatic Test Pattern Generation |
| ATPS | AppleTalk Printing Services |
| ATR | Answer To Reset |
| ATR | Attribute |
| ATR | Automatic Terminal Recognition |
| ATRAC | Adaptive Transform Acoustic Coding |
| ATRC | Adaptive Technology Resource Center, U. of Toronto |
| ATS | Administrative Terminal System |
| ATS | Advanced Training Solution |
| ATS | Apple Terminal Services |
| ATS | Author Title Subject |
| ATS | Automatic Transfer Switch |
| ATSC | Advanced Television Systems Committee |
| ATST | At The Same Time (Slang) |
| ATT | At This Time (Slang) |
| ATT | Attenuator |
| ATTC | Advanced Television Test Center, USA |
| ATV | Advanced/Amateur Television |
| ATX | Advanced Technology Extended |
| AU | Administrative/Arithmetic/Access Unit |
| AUA | Architecture Unifiee d'Applications |
| AUC | Authentication/Authority Centre |
| AUDIT | Automated/Automatic Data Input Terminal |
| AUE | Andrew User Environment |
| AUG | Apollo/Arcnet User Group |
| AUGE | Apple User Group Europe |
| AUI | Attached/Attachment Unit/Universal Interface (Ethernet) |
| AUI | Attachment Unit Interface |
| AUI | Archiver User Interface |
| AUIS | Andrew User Interface System |
| AUP | Acceptable/Appropriate Use Policy (Internet) |
| AUTEX | Automatische Telex- und Teletexauskunft der DBP |
| AUX | Apple UNIX |
| AUX | Auxiliary |
| AV | audio-visuell, Audio-Video |
| AV | Authenticity Verification |
| AV | Anti-Virus |
| AVA | Anruf-Variante |
| AVA | Attribute Value Assertion |
| AVA | Audio Visual Authoring (IBM) |
| AVC | Access Vector Cache |
| AVC | Advanced Video Coding |
| AVC | Application View Controller |
| AVC | Audio Visual Connection |
| AVC | Audio Visual Connection (IBM) |
| AVC | Automatic Volume Control |
| AVCD | Audio Visual Computer Display |
| AVCHD | Advanced Video Codec High Definition |
| AVCTP | Audio Video Control Transport Protocol (Bluetooth) |
| AVD | Alternate Voice or Data |
| AVDTP | Audio Video Distribution Transport Protocol (Bluetooth) |
| AVERT | Antivirus Emergency Response Team (NAI) |
| AVERZTXTTX | Amtliches Telex- und Teletexverzeichnis der DBP |
| AVG | Average |
| AVI | Advanced Visual Interface |
| AVI | Audio Video/Visual Interleave/Interleaved (Microsoft) |
| AVI | Audiovisuelle Integration |
| AVI | Audio/Video Interleaved |
| AVIA | Architecture for Virtual Interfaces for Applications |
| AVK | Application Verification Kit |
| AVK | Audio-Video Kernel |
| AVL | Adelson-Velskij, Landis (-Baum) |
| AVN | Adobe Virtual Network |
| AVN | Ameritech Virtual Network |
| AVON | Amtliches Verzeichnis der Ortsnetze |
| AVP | Attribute Value Pair |
| AVR | Automatic Voice Recognition |
| AVRCP | Audio Video Remote Control Profile (Bluetooth) |
| AVS | Advanced Visual System |
| AVS | Altersverifikationssystem |
| AVS | Application Visualization System (IBM) |
| AVSM | Audio-Visual Storage Manager |
| AVSP | Advanced Video Signal Processor |
| AVSS | Audio-Video Subsystem Software |
| AVVID | Architecture for Voice, Video and Integrated Data (Cisco) |
| AVX | Advanced Vector Extensions (Intel) |
| AW | Answer, Antwort |
| AWA | A While Ago (Slang) |
| AWADO | Automatischer Wechselschalter in der Anschlussdose |
| AWB | A While Back (Slang) |
| AWB | Aglets Workbench |
| AWC | Association of Women in Computing |
| AWCG | Add With Carry (random number) Generator |
| AWD | Automatische Waehleinrichtung fuer Datenverbindungen |
| AWE | Address Windowing Extension (Microsoft) |
| AWE | Advanced Workstation Environment |
| AWF | Ausbildung, Weiterbildung, Fortbildung |
| AWG | American Wire Gauge |
| AWGN | Additive White Gaussian Noise |
| AWGTHTGTTA | Are We Going To Have To Go Through This Again? (Slang) |
| AWHFY | Are We Having Fun Yet? (Slang) |
| AWL | Anweisungsliste (DIN 19239) |
| AWL | Auswahl-Logik |
| AWL | Auto Whitelist |
| AWS | Administrative Workstation |
| AWS | Advanced Workstations and Systems (group) (IBM) |
| AWS | Amazon Web Services |
| AWS | Anrufweiterschaltung |
| AWS | Anwendungssoftware |
| AWS | Apple Workgroup Server |
| AWT | Abstract/Advanced Window/Windowing Toolkit |
| AWU | Auto Wake Up |
| AX | Automatic Transmission |
| AXE | Applications Execution Environment |
| AXI | Ada X Interface |
| AXI | Advanced Extensible Interface (AMBA) |
| AXP | Almost Exactly Prism |
| AXP | Application Extension Platform (Cisco) |
| AXTLK | Alien Crosstalk |
| AXU | Application Specific Execution Unit |
| AYOR | At Your Own Risc (Slang) |
| AYST | Are You Still There? (Slang) |
| AZ | Automatische Zusammenfassung (Wikipedia) |
| AZ | Azimut |
| AZB | Anzeige-Befehl |
© 1999-2013 by Janis Möckelmann