- Ajilon Technology Aeorspace
- AKKA Architects
- AKKA Benelux
- AKKA Technologies
- akp public relations
- AKTIS INTELLIGENCE GROUP LIMITED
- AKVO via Colourful People
- AkzoNobel
- AkzoNobel Speciality Chemicals
- Albelli
- Albelli B.V.
- Albemarle
- Albemarle Corporation
- Albert Bow
- ALDI Nord
- Alexander Mann Solutions
- Alfred Schellenberg GmbH
- Aliancys Nederland B.V.
- Align Recruitment
- Align Technology
- Align Technology BV
- Align Technology, B.V.
- Alirene express logistics
- Alk
- ALK-Abelló
- Alk-Abello A/S
- All Response Media
- All4Elevation
- Alliance Française Amsterdam
- Allnex Netherlands BV
- Allocacoc
- Allseas
- Alpha CRC
- Alphacomm
- Altair Global
- ALTANA Netherlands B.V.
- Alter Domus Deutschland GmbH
- Alter Domus Nederland B.V
- Alter Domus Participations SARL
- AM Best
- AM Eyewear
- AMA Design Solutions
- Amada GmbH
- Amadeus
- Amadeus Hospitality
- Amazon