- Unisys
- Unisys Corporation - Local Sales & Customer Service
- Unitarian Universalist Congregation
- United Agri Products
- United Air Comfort
- United Airlines
- United American Insurance
- United American Insurance Company
- United Auto
- United Auto Body
- United Auto Credit Corporation
- United Auto Glass
- United Auto Parts
- United Auto Service
- United Bank
- United Bank & Trust
- United Bank of Iowa
- United Builders
- United Capital Mortgage
- United Check Cashing
- United Chiropractic
- United Chiropractic Clinic
- United Colors of Benetton
- United Commercial Bank
- United Communications
- United Construction
- United Credit Union
- United Dairy Farmers
- United Dairy Farmers - Branch Stores
- United Dairy Farmers - Stores
- United Distributors
- United Dominion Realty Trust
- United Drugs
- United Education Institute
- United Electric
- United Electric Company
- United Enterprises
- United Family Services
- United Farmers Cooperative