| Westhauser | Baden-Württemberg |
| Westsächsische Hochschule Zwickau | |
| WestTech Ventures | Berlin |
| WeSustain GmbH | |
| WEtell GmbH | |
| WETIF Industrie EDV | Bavaria |
| Weto AG | Bavaria |
| WETRON Automation GmbH | Bavaria |
| Wevolve GmbH | |
| Weydemeyer GmbH | North Rhine-Westphalia |
| WF World Fund Management GmbH | |
| WG Systems e.K. | Berlin |
| WG-Data GmbH | |
| WGS IT GmbH | |
| WGV Versicherung | |
| wh4 Design GmbH | Bavaria |
| Whal3s GmbH | Berlin |
| Whappodo.COM! GmbH | |
| What A Location .io GmbH | |
| What-the-Diff | |
| WhereGroup GmbH & Co. KG | Berlin |
| WHG Internetservice UG (haftungsbeschränkt) | Baden-Württemberg |
| White Owl Capital AG | |
| WHU – Otto Beisheim School of Management | Rhineland-Palatinate |
| Wi Venture Management GmbH | Rhineland-Palatinate |
| Wibu-Systems | Baden-Württemberg |
| WiCAM GmbH | Baden-Württemberg |
| WICE GmbH | Hamburg |
| Wichmann Datentechnik Sangerhausen GmbH | Saxony-Anhalt |
| Wichmann Systemhaus GmbH | Lower Saxony |
| Wichterich & Partner Gesellschaft für EDV-Dienstleistungen mbH | North Rhine-Westphalia |
| Widap Electronic Components GmbH & Co. KG | Bavaria |
| WidasConcepts GmbH | Baden-Württemberg |
| Widemann Systeme GmbH | Hesse |
| Wiebel und Partner GmbH | |
| Wiedemeier Kommunikation GmbH | North Rhine-Westphalia |
| Wiedenbach Apparatebau GmbH | Baden-Württemberg |
| Wiek IT - Consulting & Systems GmbH | |
| Wien Computer Expert GmbH | Schleswig-Holstein |
| Wiesemann & Theis GmbH | North Rhine-Westphalia |
| Wiest AG | Bavaria |
| Wigital GmbH | Schleswig-Holstein |
| Wikando GmbH | Bavaria |
| wikendu GmbH & Co. KG | Hesse |
| Wikifolio Financial Technologies AG | |
| wiko Bausoftware GmbH | Berlin |
| WILD Connect GmbH | Baden-Württemberg |
| Wildau Institute of Technology | |
| Wildstyle Network | Saxony |
| Wiley-VCH GmbH | |