| T J's Taxi, Listowel - Mailing Address | North Perth |
| T J's Taxi, Wingham - Mailing Address | North Huron |
| Tanner Steffler Foundation, TSF Youth Hub | Central Huron |
| Technical Training Group (Stratford & Area), Technical Training Group, Technical and Skilled Trades Training | Stratford |
| Technical Training Group (Stratford & Area), Welder, Metal Fabricator and General Machinist Apprenticeship Training, Technical Training Group | Stratford |
| The Farmers' Toolbox, Online / Web Service | Perth |
| The Guardian Network, Field Service | Toronto |
| The LearningHUB, Online/Web | North Huron |
| The Little Green Grocery, Stratford | Stratford |
| The Local Community Food Centre, St. Marys, Nourish Market | St Marys |
| The Local Community Food Centre | Stratford |
| The Local Community Food Centre, Emergency Financial Assistance - Hydro | Stratford |
| The McKinnon Centre, Mailing Address | Stratford |
| The Probus Club of Stratford, Army Navy & Air Force Veterans | Stratford |
| Tillsonburg Power & Sail Squadron, Stratford Teaching Satelite, No physical address | Stratford |
| Toastmasters International, Listowel, Linguists of Listowel Toastmasters | Listowel |
| TOPS, Perth County Chapters | Stratford |
| Town of St Marys Home Support Services, Community Dining Programs | St Marys |
| Town of St Marys Home Support Services, Home Help Referral Program | St Marys |
| Town of St Marys Home Support Services, Meals on Wheels | St Marys |
| Town of St Marys Home Support Services, Shopping Services | St Marys |
| Town of St Marys Home Support Services, Telephone Reassurance | St Marys |
| Town of St Marys Home Support Services, Foot Care Clinics | St Marys |
| Town of St Marys Home Support Services | St Marys |
| Town of St Marys Home Support Services, Volunteer Visiting | St Marys |
| Town of St Marys Home Support Services, Wellness and Fitness Programs | St Marys |
| TransUnion of Canada, Burlington, Consumer Relations | Burlington |
| TVCC, Stratford, Child and Youth Rehabilitation Services, Stratford | Stratford |
| TVO ILC | Toronto |
| TVO ILC, TVO Mathify | Toronto |