| Habitat for Humanity Huronia | Barrie |
| Habitat for Humanity Huronia, Alliston, ReStore, Alliston | New Tecumseth |
| Habitat for Humanity Huronia, Barrie | Barrie |
| Habitat for Humanity Huronia, Barrie, ReStore, Barrie | Barrie |
| Hair Prosthesis Centre | Barrie |
| Haven of The Heart | Adjala-Tosorontio |
| Head Lice Hunters, Mobile Service | Innisfil |
| Heart and Stroke, Mailing Address | Toronto |
| Help A Girl Out | Brampton |
| Help Call, Personal Emergency Response Services | Orangeville |
| Helping Hand Food Bank | Bradford West Gwillimbury |
| Helping Hand New To You | Essa |
| Historic Military Establishment of Upper Canada / Royal Newfoundland Regiment | Penetanguishene |
| HIV & AIDS Legal Clinic Ontario (HALCO) | Toronto |
| Holy Martyrs of Japan Roman Catholic Church | Bradford West Gwillimbury |
| Holy Martyrs of Japan Roman Catholic Church, St. Vincent de Paul | Bradford West Gwillimbury |
| Home Care Assistance | Barrie |
| Home Instead, Barrie | Barrie |
| Hopewood Clinic, Angus, Angus Rapid Access Addiction Medicine (RAAM) Clinic | Essa |
| Horseshoe Resort | Oro-Medonte |
| Hospice Simcoe | Barrie |
| Hospice Simcoe, Bell Farm Rd, Grief and Bereavement Support | Barrie |
| Hospice Simcoe, Bell Farm Rd, Visiting Hospice/Community Programs | Barrie |
| Hospice Simcoe, Penetanguishene Rd, Residential Hospice | Barrie |
| Hospital for Sick Children, Adolescent Medicine | Toronto |
| Hot Country 88.5 FM | Toronto Downtown |
| Human Resources Professionals Association, Barrie and District Chapter | Barrie |
| Human Rights Legal Support Centre | Toronto |
| Huronia Airport | Tiny |
| Huronia Handweavers | Springwater |
| Huronia Historical Parks, Sainte-Marie Among The Hurons | Midland |
| Huronia Museum and Huron-Ouendat Village, Day Camp and Holiday Programs | Midland |
| Huronia Museum and Huron-Ouendat Village | Midland |
| Huronia Nurse Practitioner-Led Clinic, Huronia NPLC Children's Clinic | Oro-Medonte |
| Huronia Radio Control Club | Barrie |
| Huronia Rose Society | Barrie |
| Huronia Spinners Guild | Minesing |
| Huronia Symphony Orchestra | Barrie |
| Huronia Transition Homes, Athena's Sexual Assault Counselling & Advocacy Centre | Barrie |
| Huronia Transition Homes, Choices for Children | Midland |
| Huronia Transition Homes, La Maison Rosewood Shelter | Midland |
| Huronia Urgent Care Clinic | Barrie |
| Hydro One | Toronto |