- Wright Audiology
- Wright Machine and Tool Co., Inc.
- Wright Medical Technology
- Wright State University
- Wrightway, Inc.
- WRYM Viva! Radio
- WT Lighting
- WTW Architects
- WVU Hospital
- WVU Medicine
- WVU Medicine Barnesville Hospital
- WVU Medicine Berkeley Medical Center
- WVU Medicine Braxton County Memorial Hospital
- WVU Medicine Camden Clark Medical Center
- WVU Medicine J. W. Ruby Memorial Hospital
- WVU Medicine Jackson General Hospital
- WVU Medicine Jefferson Medical Center
- WVU Medicine Potomac Valley Hospital
- WVU Medicine Reynolds Memorial Hospital
- WVU Medicine Uniontown Hospital
- WVU Medicine United Hospital Center
- WWBT NBC12
- WXMI
- Wyandot Memorial Hospital
- Wyckoff Heights Medical Center
- Wyeth
- Wyndham Garden Buffalo Downtown
- Wyndham Hotel
- Wyndham Hotels and Resorts
- Wyndham International
- Wyoming County Community Hospital
- Wyoming County United Way
- Wyoming Medical Center
- Wythe County Community Hospital
- X-TEL Communications
- Xerimis, Inc.
- Xerox
- Xerox Corporation
- Xerox Global Services
- Xerox-AMAT Manufacturing
- Xpedite
- Yahoo!
- Yale New Haven Health Westerly
- Yale New Haven Hospital
- Yamaha
- Yamhill County
- Yavapai College
- Yavapai Regional Medical Center
- Yazoo Valley Electric Power Association
- Yellow Book USA