| Angarde Groep B.V. | Utrecht |
| Angi Studio | South Holland |
| ANGOKA | |
| Angry Bytes | North Holland |
| AnL Hardware | South Holland |
| AnMass | South Holland |
| Anoxtech Holding B.V. | North Holland |
| Anshi Design | Flevoland |
| ANT Neuro | Overijssel |
| Antagonist | Overijssel |
| Anterra Capital | North Holland |
| Anubis IT-Security | Gelderland |
| Anycoin Direct | |
| AnyLinQ B.V. | Utrecht |
| Anywhere365 | South Holland |
| Anywhere365 | |
| AOC International (Europe) B.V. | |
| AP Nederland B.V. | North Holland |
| Ap-art B.V. | South Holland |
| APdV Supplies | Groningen |
| Apexive | North Holland |
| App B.V. | Drenthe |
| Appèl B.V. | |
| Appendee | Utrecht |
| Appical | |
| Appjection | |
| Apple Club Eindhoven | North Brabant |
| Applepie | |
| Application Partners | |
| Applied Nanolayers B.V. | |
| Applified | |
| Applify | South Holland |
| AppliGate | Utrecht |
| Apployed | |
| AppMachine B.V. | |
| Appnormal | Overijssel |
| Appril Festival | North Holland |
| Approach | Utrecht |
| Apps & Us | Utrecht |
| AppSignal B.V. | |
| Appsterdam | |
| Appwiki | Groningen |
| AppyThings B.V. | |
| APR Elektronika Produktie B.V. | North Brabant |
| APS IT-diensten | Utrecht |
| Aqua Sprk | |
| Aqui | South Holland |
| Aquila Informatica B.V. | South Holland |
| Aranea | North Brabant |
| Arca Printers & Suplies | North Brabant |