Politics and Business magazines
- Williams Communications Group, Inc.
- Williams Scotsman, Inc.
- Willis Corroon Group plc
- Wilmington Trust Corporation
- Wilson Bowden Plc
- Wilson Sonsini Goodrich & Rosati
- Winbond Electronics Corporation
- Wincanton plc
- Winchell's Donut Houses Operating Company, L.P.
- WinCo Foods Inc.
- Wincor Nixdorf Holding GmbH
- Wind River Systems, Inc.
- Windmere Corporation
- Windstream Corporation
- Windswept Environmental Group, Inc
- Winegard Company
- Winmark Corporation
- WinsLoew Furniture, Inc.
- Winston & Strawn
- Winterthur Group