Business groups starting with "U" - United Communities – Nolan Hill to Universite DE Montreal
- United Communities – Nolan Hill 2
- United Concrete & Gravel Ltd 3
- United Conservatory of Music 3
- United Disinfectant 3
- United Employees Credit Union 3
- United Express 4
- United Family Martial Arts 5
- United Farmers of Alberta 26
- United Field Services 3
- United Food & Commercial Wrkrs 34
- United Furniture Warehouse 80
- United Loan Center 2
- United Lumber Home Hardware 3
- United Masonry & Roofing 2
- United Methodist Communities at Bristol Glen 2
- United Mine Workers of America 3
- United National Contractors 2
- United Newark Plumber, Drain & HVAC Co. 2
- United Optical 4
- United Painting & Decorating 3
- United Parking MD 6
- United Pentecostal Church 57
- United Personal Injury Assoc 4
- United Pest Solutions 2
- United Plumbing & Drain 2
- United Power Washing 2
- United Protection Svc 4
- United Refrigeration of Canada 7
- United Renovations Specialty Group 2
- United Rentals 31
- United Rentals Inc 3
- United Rentals Ltd 3
- United Rentals of Canada 5
- United Roofing & Exteriors 2
- United Roofing Pros Oklahoma City 2
- United Roofing Pros Raleigh 2
- United Roofing Pros Tulsa 2
- United Savings Credit Union 6
- United States Postal Service 3
- United States Postal Service 2
- United States Postal Service 2
- United States Postal Service 2
- United Steelworkers 7
- United Steelworkers of America 59
- United Synagogue Day School 4
- United Transportation Union 9
- United Way 11
- United Windows Pro LLC 2
- United Windows Pro LLC 2
- unitedpillsshop 2
- unitedpillsshop 2
- Unites Mobiles DE Coiffure Inc 4
- Unitrac Industrial Tires Inc 3
- Unity Debt Solutions, Birmingham 2
- Unity Debt Solutions, Birmingham 2
- Unity One Credit Union 3
- Unity Savings & Credit Union 6
- unitywellness 2
- unitywellness 2
- Univar Canada Ltd 7
- Universal 3
- Universal Accounting Center 2
- Universal Capital 3
- Universal Driving School 3
- Universal Dynamics Ltd 4
- Universal Heating Ltd 2
- Universal Home Concepts 2
- Universal Immigration Services 2
- Universal Logistics Inc 5
- Universal Maintenance 3
- Universal Marine Consultants 3
- Universal Music 4
- Universal Optical 3
- Universal Rehabilitation Svc 9
- Universal Tao Ctr of Toronto 2
- Universal Translation Services 3
- Universal Truck & Trailer 3
- Universal Truck Bodies 3
- Universal Video Conversions 2
- Universite DE Montreal 4