| PTC/USER Benelux | North Holland |
| PTGui | South Holland |
| Publitas.com B.V. | |
| PullPrint | South Holland |
| PureIMS | Drenthe |
| Pursuit | North Holland |
| PushCall | South Holland |
| PX B.V. | |
| Pygmalion B.V. | |
| PyGrunn | Groningen |
| Pylades | North Holland |
| Pyramid Analytics | North Holland |
| Pyramid Applied Solutions | Limburg |
| Q-ray | Drenthe |
| Q-Tech B.V. | |
| Q42 | South Holland |
| QA Systems GmbH | North Holland |
| QAValue | |
| Qblox | |
| QBS group | Utrecht |
| Qconferencing | North Holland |
| QDC Internetservices | South Holland |
| QDI Systems | Groningen |
| Qexpertise | Utrecht |
| QISS IT | |
| Qlicks | |
| Qlikchain International B.V. | South Holland |
| QNP ICT & Telecom Profesionals | North Brabant |
| Qoncord | North Holland |
| Qone Internet Services | North Holland |
| QphoX B.V. | |
| Qpinch B.V. | |
| Qrcus | Limburg |
| Qsite.com B.V. | Flevoland |
| Quad Team | North Brabant |
| Quadient | Flevoland |
| Quadira B.V. | |
| Qualinx B.V. | |
| Quality Networks | |
| Quality Positioning Services B.V. | Utrecht |
| Quality Support B.V. | Gelderland |
| Quality Systems B.V. | Utrecht |
| Qualogy | South Holland |
| Quan | |
| Quantaris | Utrecht |
| Quantib B.V. | |
| Quantoz N.V. | Utrecht |
| Quantum Delta NL | |
| Quantum for Business | |
| Quantum Inspire | South Holland |