| KING Software | South Holland |
| KISS Computer Service & Training | Friesland |
| Kitepower | South Holland |
| Kleisteen | North Holland |
| klikhosting.nl | North Holland |
| Kling Biotherapeutics B.V. | |
| Klove Electronics B.V. | North Holland |
| Knaken Cryptohandel B.V. | |
| Knight Capital B.V. | |
| Knoester & van Kessel | North Holland |
| KnoopStat | Friesland |
| Knowork Knowledge Networks B.V. | |
| Knoworries | Utrecht |
| KNS Automatisering B.V. | North Holland |
| Kodision | Gelderland |
| Koerhuis Automatisering B.V. | Drenthe |
| Kolibri | |
| Komdex Software Ontwikkeling B.V. | South Holland |
| KommaGo B.V. | Utrecht |
| Koning & Hartman | South Holland |
| Koninklijke Philips N.V. | North Holland |
| KOOMBA | South Holland |
| Kopano | South Holland |
| Korade | Utrecht |
| Korndewal | Utrecht |
| Korton Group B.V. | North Holland |
| KovoKs B.V. | Gelderland |
| KPMG International Ltd | |
| KPN B.V. | South Holland |
| KPN Netwerk | |
| KPN Ventures | South Holland |
| Kraan B.V. | South Holland |
| Kred'it B.V. | North Brabant |
| Kreuze | Limburg |
| Krita | Overijssel |
| Kubus | North Brabant |
| KVL Inspiratie Technologie B.V. | South Holland |
| KYOCERA Document Solutions Europe B.V. | |
| KZA B.V. | Utrecht |
| L'Unité Groep | North Holland |
| L.S.K. Automatisering | Utrecht |
| L1NDA | North Holland |
| Laarman & Van Waay B.V. | Utrecht |
| Lab Services B.V. | North Brabant |
| Label305 B.V. | Overijssel |
| LAI | North Holland |
| Lalaland.ai | |
| Lamson Group B.V. | Utrecht |
| Lanclan B.V. | South Holland |
| Lancom B.V. | South Holland |