- 2TheMax
- 3C Comm.
- 3Com
- A Trend
- Aaeon
- Ability
- ABIT
- ABS Computer
- Acer Memory
- Achitec
- Achme
- ACOM
- Acorp
- ACT
- Action Well
- Adaptec
- Adastra Systems
- ADC (Asian Digital)
- ADI Corp
- Advanced Integration
- Advanced Logic
- Advantech
- Advent
- AGER
- Agfa
- Aiptek
- AIR (Advanced Integration Research)
- AIWA
- AJP
- Ajump
- Akai Sampler
- AKIA
- Akica
- Alaris
- Albatron
- ALCAM
- ALD
- Alienware
- ALLIED Computer Industries (ACI)
- ALPHA-TOP
- ALR
- ALTIMA
- Alton
- A-Max
- AMD
- Amedia
- AMI
- Amptron
- AMS TECH
- Amstrad
- Animation Technologies
- Antec
- AOL
- AOpen
- APAC Multimedia
- Apaq
- Apple Mac Memory
- Apricot
- APT
- Aqcess Technologies Tablet
- Aquarius Systems (ASI)
- AQUILINE
- ARBOR
- Archtec
- Arcom
- Argus
- Aries
- Arima
- ARISE
- Arista
- Aristo
- ARM
- Armari
- ASI
- Asia Direct
- Aspen
- ASRock
- AST
- Astro Research
- ASUS
- ASUSTEK
- AT&T/NCR
- Ate Systems
- ATI Technologies
- Atima
- Atlas
- ATLMultimedia
- Audible
- Audiovox
- AUSTIN
- Autocomputer
- AutoFarm
- AVADirect
- Averatec
- AVT
- Axil
- Axle
- Azza
