- Apple
- Applied Materials Europe B.V.
- Applied Medical
- Applied Micro Electronics AME B.V.
- AppLike GmbH
- Applikon Biotechnology BV
- Approach People Recruitment
- APS Group
- aQysta BV
- Arcadis Nederland BV
- ARGETON GmbH
- Arla Foods Amba
- ARLA FOODS AMBA
- Arlington Consultants
- Arlon Graphics
- Arlon Graphics LLC
- Aroundtown Management NL B.V.
- Arrow Electronics
- Arrow Electronics DLC B.V.
- Arrow Electronics INC
- Arrow Truck Sales GmbH c/o Volvo Group Trucks Central Europe
- Artex BV
- Artsen zonder Grenzen
- Arval BV
- Arvato Bertelsmann
- arvato Finance B.V.
- Ascensia Diabetes Care
- Ascensos Contact Centres Netherlands
- ASICS
- ASICS Europe BV
- ASM Active Stock Management
- ASML
- ASP Global Manufacturing
- Aspecta B.V.
- AssistiveWare
- Assurant Solutions
- Astellas
- Astellas Pharma Europe B.V.
- aTalent
- ATC - Logistics
- Athlon
- Athlon Car Lease
- Ati Sistemas Netherlands
- Atida
- Atlanship
- Atlantis Solutions B.V.