- U.S. Destination Marketing Inc.
- U.S. DOE - National Energy Technology Laboratory
- U.S. DOL-ETA-Youth Services
- U.S. Environmental Protection Agency
- U.S. Environmental Protection Agency of Fairfax, VA
- U.S. Food and Drug Administration -Southwest Region
- U.S. Foodservice
- U.S. Forest Service
- U.S. Government Printing Office
- U.S. Liquids, Inc.
- U.S. New Mexico Federal Credit Union
- U.S. Office of Personal Management Chicago Office
- U.S. Office of Personnel Management
- U.S. Post Office - Stow
- U.S. Senator Robert Bennett and Staff
- U.S. Vision, Inc.
- U.S.A. Labs
- UAB Callahan Eye Hospital
- UAB Hospital
- UAB Hospital Highlands
- UAB School of Health Professions
- UAB School of Nursing
- UAW General Motors Department
- UAW Local 1250-Ford Motor Company
- UAW-Ford Family Service and Learning Ctr.
- UBS - Paine Webber - Guaynabo
- UBS Paine Webber Inc. - Richmond
- UC Black Law Student's Association
- UC Davis Health System
- UC Davis Medical Center
- UC Health
- UC Irvine Medical Center
- UC San Diego Health System
- UCF Lake Nona Hospital
- UCHealth Greeley Hospital
- UCHealth Highlands Ranch Hospital
- UCHealth Longs Peak Medical Center
- UCHealth Medical Center of the Rockies
- UCHealth Memorial Hospital Central
- UCHealth Poudre Valley Hospital
- UCHealth University of Colorado Hospital
- UCL Fielding School of Public Health
- UCLA Conferences and Catering
- UCLA Department of Psychology
- UCLA Medical Center
- UCLA Medical Center, Santa Monica
- UCLA School of Dentistry
- UConn John Dempsey Hospital
- UCSD Jacobs Medical Center
- UCSD Medical Center