| Adoption Council of Ontario, Markham - Mailing Address | Markham |
| Canada Mortgage and Housing Corporation, Ontario | Toronto |
| Canada. Indigenous Services Canada, Indian Residential Schools Settlement Agreement | Gatineau |
| Canadian Centre to End Human Trafficking, Canadian Human Trafficking Hotline | Ontario |
| Canadian Red Cross, Toronto Branch, First Contact Program | Toronto |
| Family Services Perth-Huron, Stratford, Connecting Seniors | Stratford |
| Family Services Perth-Huron, Stratford, Family Support - Case Management | Stratford |
| Fem'aide : Francophone helpline for women affected by violence | Ontario |
| Huron Health System - Alexandra Marine and General Hospital, Goderich - Huron Rd, Huron Perth Clinical Intensive Case Management | Goderich |
| Huron Perth Community Legal Clinic, Goderich | Goderich |
| Huron Perth Community Legal Clinic, Stratford | Stratford |
| Knollcrest Lodge, Community Outreach Services | Perth East |
| Listowel Wingham Hospitals Alliance, Listowel Memorial Hospital | North Perth |
| Listowel Wingham Hospitals Alliance, Wingham and District Hospital | North Huron |
| Muscular Dystrophy Canada - Ontario Regional Office | Toronto Downtown North |
| National Eating Disorder Information Centre | Toronto Downtown Central |
| Ontario Health atHome South West Area, Stratford Office, Information and Referral | Stratford |
| Ontario Health atHome South West Area, Stratford Office, Ontario Health atHome | Stratford |
| Ontario. Ministry for Seniors and Accessibility | Toronto |
| Ontario. Ministry of Agriculture, Food and Agribusiness, Clinton, Clinton Resource Centre | Central Huron |
| Ontario. Ministry of Children, Community and Social Services. Support Services for Male Survivors of Sexual Abuse Program | Toronto |
| Ontario. Ministry of Health, Sexual Health Infoline Ontario | Toronto Downtown |
| General Topics and Information - Central East, Ontario. Ministry of Health and Long-Term Care, Wait Times in Ontario | Ontario |
| Ontario. Ministry of Natural Resources [Central East], Peterborough - Mailing Address, Natural Resources Information and Support Centre | Peterborough |
| Ontario. Office of the Worker Adviser, Scarborough - Milner Ave, Ontario. Office of the Worker Adviser, Scarborough Office | Toronto |
| Perth County Information Network | St Marys |
| Quality In Lifelong Learning Network, QUILL Learning Network, Literacy and Basic Skills Support Organization | Huron East |
| ServiceOntario - Perth County, Stratford - 59 Lorne Ave E, Stratford Full Service Counter | Stratford |
| Shelterlink Youth Services | Stratford |