- Westway Architects
- WestWood Italia
- WET
- Wetech System by Sistemi Elettrici
- Wever & Ducré
- WeWantMore
- WeWatt BVBA
- Wewood - Portuguese Joinery
- Wex trade
- WEYES Studio
- Weyne NV
- Weyts Interieuradviseurs
- Wezel Architektur
- WF Arquitetos
- WF MECHANIK SNC
- WFA DESIGN
- WFarah Arquitetos Associados
- WGarchitects
- WGlobal
- WGS - WARMEGERATEMAU STEYR GmbH
- WHALE! Architecture
- Whaleys Ltd
- WHAT
- WHD - W. Huber Söhne GmbH Co. KG
- Wheeler Kearns Architects
- WHIM architecture
- Whipple Russell Architects