| Name | Region |
|---|---|
| WindSim AS | Vestfold |
| Wiral Technologies AS | |
| Workhouse AS | |
| WP-Hosting.no | Oslo |
| X2 Labs | |
| Xeneta AS | |
| XLR8HUB | |
| XSENS AS | |
| Xynteo | |
| Yaha AS | Aust-Agder |
| Yalmar Solutions AS | |
| Yara International ASA | |
| ZaveIT | |
| Zeabuz AS | |
| Zeipt AS | |
| Zelluna Immunotherapy AS | |
| Zendera | |
| Zendera AS | Oslo |
| Zenitel | Vestfold |
| Zirius AS | Oslo |
| ZTL Payment Solution | |
| Zwipe | Oslo |
| Ørland Sparebank | |
| Ørn Software | Østfold |
| Østlandsweb AS | Hedmark |