- U P M C Health Plan
- U S Steel & Carnegie Pension
- U S Steel Building Barber
- UBS Financial Svc
- UDA Architects
- Unforgettable Creations Inc
- Uniforms USA
- Union Mining Co Inc Pittsburgh
- Union Real Estate Co
- United States Government
- United States Steel Corp
- Univ Of Pittsburgh
- Universal Academy-Pittsburgh
- Universal Creative Concepts
