| Kundenname | Stadt | Land |
|---|---|---|
| Westlake Vinnolit GmbH & Co. KG | Hürth | Germany |
| WeylChem Frankfurt GmbH | Frankfurt | Germany |
| Wiener Netze GmbH | Wien | Austria |
| WIG Industrieinstandhaltung Leuna | Leuna | Germany |
| WIKA Process Solutions India Pvt. Ltd. | Prithla | India |
| Wilhelmshavener Raffineriegesellschaft mbH | Wilhelmshaven | Germany |
| Wilson UK Ltd. | Gorleston | United Kingdom |
| Wintershall Holding GmbH | Kassel | Germany |
| Wintershall Noordzee B.V. | Rijswijk | Netherlands |
| WIP Engineering GmbH | Krefeld | Germany |
| wiv.hongkong | Shenzhen | China |
| Wolseley Industrial Group | Clarksville | United States |
| Wolseley Industrial Group | Fort Edward | United States |
| Wolseley Industrial Group | Morrisville | United States |
| Wood Group - CCC Limited | Muscat | Oman |
| Wood Group UK Limited | Aberdeen | United Kingdom |
| Wood plc | Chennai | India |
| WORLEY BELGIUM BV. | Antwerpen | Belgium |
| Worley Nederland B.V. | Meersen | Netherlands |
| Worley Nederland B.V. | Den Haag | Netherlands |
| Worley Oman Engineering LLC | Al-Khuwair, Muscat | Oman |
| Worley Oman Engineering LLC | Muscat | Oman |
| Worley Projects GmbH | Köln | Germany |
| WorleyParsons | Edmonton | Canada |
| WPD Wartungs- und Prüfungsdienst GmbH | Speyer | Germany |