- UCSD Medical Center Hillcrest
- UCSD School of Medicine
- UCSF - University of California San Francisco
- UCSF Benioff Children's Hospital Oakland
- UCSF Fresno Medical Education Program
- UCSF Health, Transplant Services
- UCSF Mission Bay
- UCSF School of Denistry
- UF Health Flagler Hospital
- UF Health Jacksonville
- UF Health North
- UFCW-Local 880
- UFG Insurance
- Uhealth Tower - University of Miami Health System
- Uhling Consulting- Registered Dietitians
- UI Health
- Uintah School District
- UK Healthcare
- Ukiah Valley Medical Center
- Ukrop's Super Markets, Inc.
- Ultradent Products, Inc.
- Ultrasound Diagnostic School
- ULTREX
- UM Capital Region Medical Center
- UM Prince George's Hospital Center
- UMass Amherst Residential Life Student Services
- UMass Memorial - HealthAlliance Hospital
- Umass Memorial HealthAlliance-Clinton Hospital
- UMASS Memorial Medical Center - Memorial Campus
- UMASS Memorial Medical Center - University Campus
- Umatilla County
- UMBC
- UMDNJ
- UNC - TV
- UNC Caldwell
- UNC Hospital Hillsborough Campus
- UNC Medical Center
- UNC Medical Center Transplant Care
- UNC Rex Healthcare
- UNC Rex Holly Springs Hospital
- UNC Rockingham Health Care
- UNC-A Literature and Language
- UNC-TV
- Underwood's Landscaping
- Ungerboeck Systems International, Inc.
- Uni Boring Company, Inc.
- Uni-First
- UNI-Solar
- Unicoi County Hospital
- Unicomm, LLC