| Organization / Program Name(s) | Located In |
|---|---|
| Ultra Med Pharmacy | Brampton |
| Unicare Pharmacy of Mississauga, Unicare IDA Pharamcy | Mississauga |
| UNICEF Canada | Toronto |
| United Urgent Care Associates | Brampton |
| United Way Greater Toronto | Toronto |
| Unity Diagnostic Center, Woodbridge | Woodbridge |
| Upper Credit Humane Society | Erin |
| Upper Grand District School Board, Dufferin Centre for Continuing Education | Orangeville |
| Uptown Eye Specialists, Brampton | Brampton |
| Urban Alliance on Race Relations | Toronto (City of) |
| Urban Pharmacy | Mississauga |
| USCA Academy |