- U.S. Attorney’s Office for the Northern District of Illinois
- U.S. Chamber of Commerce
- U.S. Court of Appeals for the Eleventh Circuit
- U.S. Department of Agriculture
- U.S. Department of Veterans Affairs
- U.S. House Energy and Commerce Committee
- U.S. House Ways and Means Committee
- U.S. News and World Report
- U.S. PIRG
- U.S. Senate Committee on Finance
- UBS
- UCare
- UCLA
- UCR
- Ultra Care Management LLC
- UMass Boston
- UMass Memorial Medical Center
- United Hebrew Geriatric Center
- United Hospital Fund
- United Methodist Homes
