- A-tekenset
- A-time (Absolute time)
- A/D-converter (Audio/Digitaal Converter)
- A/V-systeem (Audio/Video-systeem)
- A0
- A2A (Application to Application)
- A3
- A3D
- A4
- A5
- AA (Auto Answer)
- AA (Author's Alteration)
- AAA (Authentication Authorization and Accounting)
- AAAAA (American Association Against Acronym Abuse)
- AAAI (American Association of Artificial Intelligence)
- AAB (All-to-All Broadcast)
- AAC (Advanced Audio Coding)
- AAM (Automatic Acoustic Management)
- AAN (All Area Network)
- Aanmelden
- Aanraakscherm
- Aanvinken
- AAR (Automatic Alternate Routing)
- AARNET (Australian Academic Research Network)
- AARP (AppleTalk Address Resolution Protocol)
- AAT (Average Access Time)
- AAX (Automated Attendant Exchange)
- ABC (Atanasoff Berry Computer)
- ABC (Activity Based Costing)
- Abcis
- ABHC (Average Busy Hour Calls)
- ABI (Application Binary Interface)
- ABM (Asynchronous Balanced Mode)
- Abonneren
- Abort
- ABR (Auto Baud Rate)
- ABR (Area Border Router)
- ABR (Available Bit Rate)
- ABS (Alternative Billing Service)
- Absolute URL
- Absoluut adres
- Absortievermogen
- Abstraction
- Abundance
- AC (Alternating Current)
- AC adapter (Alternating Current Adapter)
- AC3 (Audio Codec 3)
- ACAP (Application Configuration Access Protection)
- ACB (Automatic Call Back)
- Access Denied
- Access key
- Access Point
- Access provider
- Accessibility
- Account
- ACD (Automatic Call Distribution)
- ACD (Automatic Call Distribution)
- ACELP (Algebraic Code Excited Linear Prediction)
- Achtergrond
- Achterruit-antenne
- ACIA (Asynchronous Communication Interface Adapter)
- ACIAS (Automated Calibration Interval Analysis System)
- ACK (ACKnowledge)
- ACL (Access Control List)
- Acoustic coupler
- ACPI (Advanced Configuration and Power Interface)
- ACPI (Advanced Configuration and Power Interface)
- ACR (Allowed Cell Rate)
- ACR (Attenuation to Crosstalk Ratio)
- Acroniem
- ACSE (Association Control Service Element)
- Actieve luidspreker
- ActionScript
- Active Desktop
- Active hub
- Active terminator
- ActiveX
- ACTS (Automated Coin Toll Service)
- ACU (Automatic Call Unit)
- Ad Hoc netwerk
- Ada Lovelace
- ADABAS (Adaptable DAta BAse System)
- ADAM (Active Directory Application Mode)
- ADAPSO (Association of Data Processing Services Organizations)
- ADB (Apple Desktop Bus)
- ADC (Adaptive Data Compression)
- ADC (Analog-to-Digital Converter)
- ADCCP (Advanced Data Communication Control Procedure)
- ADCI (Automatic Display Call Indicator)
- ADCT (Adaptive Discrete Cosine Transformation)
- Add-on
- Address Mask
- Address resolution
- ADF (Automatic Direction Finder)
- ADF (Automatic Document Feeder)
- ADLC (Adaptive Lossless Data Compression)
- ADLC (Asynchronous Data Link Control)
- AdLib
- ADM (Add Drop Multiplexer)
- ADM (Asynchronous Disconnected Mode)
- ADN (Advanced Digital Network)
- Adobe Reader
- ADPCM (Adaptive Differential Pulse Code Modulation)
- ADPCM (Adaptive Differential Pulse Code Modulation)
- ADR (Astra Digital Radio)
- Adres
- Adresbalk
- Adresbus
- ADSI (Active Directory Service Interfaces)
- ADSL (Asymmetric Digital Subscriber Line)
- ADSR (Attack, Decay, Sustain, Release)
- ADT (Advanced DRAM Technology)
- ADT (Application Development Tools)
- ADTS (Automated Digital Terminal System)
- Adware
- AE (Application Entity)
- AEA (American Electronics Association)
- AES (Advanced Encryption Standard)
- AES/ABU (Audio Engineering Society/European Broadcasting)
- AF (Audio Frequency)
- Affiliate
- Afsluiten
- Afstandsbediening
- AGC (Automatic Gain Control)
- AGP (Accelerated Graphics Port)
- AIFF (Audio Interchange File Format)
- AIRCAMPING
- AIRPASS
- Akoestiek
- Algoritme
- Alkaline
- All-in-one
- Alleen analoog
- ALT (Accelerated Life Testing)
- ALT (Accelerated Life Testing)
- AMA (Automatic Messaging Accounting)
- AMI (American Megatrends Inc.)
- AMI (Alternate Mark Inversion)
- Amplitude
- AMPS (Advanced Mobile Phone Service)
- Analoge geluidsdoorgave
- Analoge televisie
- Analoge videodoorgave
- Analoge videodoorgave
- Anamorphic Widescreen
- Animated GIF
- Anonymous FTP (Anonymous File Transfer Protocol)
- ANSI Lumen (American National Standard Institute lumen)
- ANSI standaarden (American National Standards Institute)
- ANSI tekenset
- Anti-aliasing
- Antiskating
- Apache
- Apache error logs
- Apenstaartje
- API (Application Programming Interface)
- APL (A Programming Language)
- APM (Advanced Power Management)
- APM (Advanced Power Management)
- APNIC (Asia Pacific Network Information Center)
- APPC (Advanced Program-to-Program Communication)
- Applet
- Applicatie
- APS (Advanced Photo System)
- APS (Analog Protection System)
- Archief
- AREA Autofocus
- Armlift
- ARPANET (Advanced Research Projects Agency Network)
- Art Director
- Artefacts
- ASCII tekenset (American Standard Code for Information Interchange)
- ASF (Advanced Streaming Format)
- Asferisch
- ASP (Application Service Provider)
- ASP (Active Server Pages)
- ASP.NET (Active Server Pages.NET)
- Aspect Ratio
- Aspect Ratio
- Assymetrische verbinding
- Asterisk
- Aston
- AT&T (American Telephone & Telegraph)
- ATA (AT Attachment)
- ATA (Advanced Technology Attachment)
- ATA1
- ATA2
- ATA3
- ATA4
- ATA5
- ATAPI (Advanced Technology Attachment Packet Interface)
- Athlon
- ATM (Asynchronous Transfer Mode)
- ATRAC (Adaptive Transform Acoustic Coding)
- Attachment
- Attribuut
- ATX (Advanced Technology Extended)
- Auteursrecht
- Authentication (DVD)
- Auto Edit
- Autoexec.bat
- Autofocus
- Automatisch aanvullen
- Autoresponder
- Autosense
- Aux (Auxiliary)
- Avatar
- AVATAR (Advanced Video Attribute Terminal Assembler and Recreator)
- AVI (Audio Video Interleaved)
- AZERTY
- Azimuth
