Businesses beginning with U
- U Rent Sales Inc
- U S Builders
- Uber Company Heating & Air Conditioning
- Uhring's Hearing & Balance Center
- Ultimate Auto Body Inc
- Uncle Joe's Scuba LLC
- Underground Archives
- Underwood Solar Future LLC
- Unified Service
- Union City Pharmacy
- Union Real Estate Company
- Uniontown Industrial Equipment Company Inc
- Unique Cycles
- Unique Services & Applications Inc
- Unique Uniforms
- United Mercantile Company of Pittsburgh
- United Safety Services Inc
- Unity Printing Company, Inc.
- Universal Promotions Inc
- Universal Steel Buildings Corporation
- Universal Windows Direct of SW PA
- University of Phoenix Pittsburgh Campus
- Uno Chicago Grill
- Upton Paving Contractors
- Urbanowicz Jewelers
- Ursuline Senior Services
- USA Insulation
- USX Federal Credit Union
- Utility Refund Agency Inc