| Wissenschaftszentrum Berlin für Sozialforschung gGmbH | |
| Witas Berlin | Berlin |
| Witchmaster Software GbR | North Rhine-Westphalia |
| WITO-Media | Bavaria |
| Wittig Electronic GmbH | Saxony |
| Wittmann EDV-Systeme GmbH | Bavaria |
| Wittwer Industrielle Elektronik | Bavaria |
| Witzenmann GmbH | |
| WIV GmbH | North Rhine-Westphalia |
| Wiwie GmbH | Saarland |
| Wiz AI | Hesse |
| Wizardmedien | Lower Saxony |
| Wizards & Builders Methodische Softwareentwicklung GmbH | Hesse |
| Wizely | |
| WK DiscPress | Bavaria |
| wkDATA.COM Document Management UG | |
| WKS Bürotechnik & EDV-Support GmbH | Baden-Württemberg |
| WMD Capital GmbH | |
| WMS Walter Meile Systeme GmbH & Co. KG | Bavaria |
| Wndrfuel | North Rhine-Westphalia |
| WOA GmbH | Hesse |
| Wob AG | |
| WOBCOM GmbH | Lower Saxony |
| Woboq GmbH | |
| wohlgemuth+team GmbH | Berlin |
| Wöhrmann Softwareentwicklung | Bavaria |
| Wolf IT Consulting GmbH | Rhineland-Palatinate |
| Wolf Kopiersystem GmbH | Baden-Württemberg |
| Wolf Produktionssysteme GmbH & Co. KG | |
| Wolf Theiss Rechtsanwälte GmbH & Co. KG | |
| Wölfel Beratende Ingenieure GmbH & Co. KG | Bavaria |
| Wolfman.one GmbH | |
| Wolfram Unternehmensgruppe | Berlin |
| WOLFSOFT GmbH | Rhineland-Palatinate |
| Wolke23 Webdesign & SEO | Hesse |
| Wolkenhart | Baden-Württemberg |
| WoloSoft International | Thuringia |
| Wolpertinger Games | |
| WoltLab Suite | Berlin |
| Wonder Technologies GmbH | |
| Wonderweb Media e.U. | |
| Woodpecker Time Tracker | Baden-Württemberg |
| Woodshed Productions | Hesse |
| Wooga GmbH | Berlin |
| Wordstation GmbH | Hesse |
| WordToPDF Pro | Baden-Württemberg |
| WORK Microwave GmbH | Bavaria |
| work4all GmbH | North Rhine-Westphalia |
| work@lim.it Systemhaus GmbH | Bavaria |
| Workerbase GmbH | |