| Kaizo | North Holland |
| KameraOne B.V. | North Holland |
| KamphuisGroep | Utrecht |
| Kannegieter | Utrecht |
| Kanteff Speech Processing | South Holland |
| Kardan N.V. | |
| Karmac | Flevoland |
| Katanox B.V. | |
| KBC Import / Export | Gelderland |
| KCR Computers | Drenthe |
| KCS B.V. | South Holland |
| KDB Security | |
| KeeminK Design B.V. | North Holland |
| Keen Venture Partners | North Holland |
| KeenCorp | South Holland |
| Kega | |
| Keizer Karel webdesign | |
| KellyW Design | |
| Kembit | Limburg |
| Kempen Automatisering | North Holland |
| Kendrion N.V. | |
| Kenney | |
| Kentaa B.V. | Gelderland |
| Keplar Agency | |
| Kepler Vision Technologies | |
| Kersvers | |
| KeurWeb.nl | |
| Keylane B.V. | Utrecht |
| KGOM.nl | Overijssel |
| Khondrion B.V. | |
| KICK-ICT | South Holland |
| KickStart Europe | |
| Kien | |
| Kieskeurig | North Holland |
| KIMO | |
| KING Software | South Holland |
| KISS Computer Service & Training | Friesland |
| Kitepower | South Holland |
| Klein Media | |
| Kleisteen | North Holland |
| klikhosting.nl | North Holland |
| Kling Biotherapeutics B.V. | |
| Klippa App B.V. | |
| Kliq Internet | |
| Klove Electronics B.V. | North Holland |
| Knight Capital B.V. | |
| Knoester & van Kessel | North Holland |
| KnoopStat | Friesland |
| Knowork Knowledge Networks B.V. | |
| Knoworries | Utrecht |