| Organization Name(s) | Located In |
| Habitat for Humanity, New Tecumseth Chapter | New Tecumseth |
| Habitat for Humanity Huronia ReStore, Barrie | Barrie |
| Habitat for Humanity North Simcoe | Midland |
| Habitat for Humanity Orillia/Lake Country Inc. | Orillia |
| Habitat for Humanity ReStore, New Tecumseth | Alliston |
| Habitat for Humanity South Georgian Bay | Collingwood |
| Habitat for Humanity-Huronia | Barrie |
| Hair Prosthesis Centre | Barrie |
| Haldimand-Norfolk Information Centre | Simcoe |
| Halton Hills Community Support and Information, Georgetown Office | Georgetown |
| Hampton House Psychotherapy Centre (The) | Alliston |
| Harbour View Golf and Country Club | Innisfil |
| Harvest Ontario | Toronto |
| Haven of Hope | Loretto |
| Haven of The Heart | Palgrave |
| Head Lice Hunters | Innisfil |
| Health and Safety Solutions | New Tecumseth |
| Health Centre of Bradford | Bradford |
| Hearing Sciences Audiology & Hearing Aid | Alliston |
| Heart and Stroke Foundation of Ontario, Barrie Office | Barrie |
| Heart and Stroke Foundation of Ontario, Newmarket Office | Newmarket |
| HelpAge Canada. Head Office | Ottawa |
| Helping Hand Food Bank, Bradford | Bradford |
| Helping Hand Food Bank, Christmas Assistance, Bradford | Bradford |
| Helping Hand New To You, Angus | Angus |
| Helping Hands Soup Kitchen. Penetanguishene | Penetanguishene |
| Highlands Golf Club (The) | Bradford West Gwillimbury |
| Hill Billy Hack Riding Stable and Animal Sanctuary | Mansfield |
| Hillside Community Church | Tottenham |
| Historic Military Establishment of Upper Canada/Royal Newfoundland Regiment | Penetanguishene |
| Historical Automobile Society of Canada, Georgian Bay Region | Barrie |
| Hockley United Church | Caledon |
| Holland Bloorview Kids Rehabilitation Hospital | Toronto |
| Holland Marsh District Christian School | Newmarket |
| Hollows Camp (The) | Bradford |
| Holy Cross Catholic School, Innisfil | Innisfil |
| Holy Family Separate School | Alliston |
| Holy Martyrs of Japan Roman Catholic Church | Bradford |
| Holy Trinity High School | Bradford |
| Holy Trinity Lutheran Church | Bradford |
| Home Instead Senior Care, Barrie | Barrie |
| Home Support Services | Thornton |
| Home Weatherization Retrofit Program | Toronto |
| Hon Earl Rowe Public School | Bradford |
| Hospice Simcoe | Barrie |
| Hospice Simcoe, Bereavement Walking Group | Barrie |
| Hospice Simcoe, Residential Hospice | Barrie |
| Hospice Simcoe, Visiting Hospice | Barrie |
| Hospital For Sick Children (The) | Toronto |
| Hospital For Sick Children (The), Adolescence Substance Abuse Outreach Program | Toronto |
| Hospital For Sick Children (The), Eating Disorders Program | Toronto |
| Hsin (Dr Mabel) | Bradford |
| Hulick (Mary Ann), Psychotherapist | Beeton |
| Hull (Dr Sharon E) | Bradford |
| Human Resources and Development Canada, Canada Learning Bond | Toronto |
| Human Rights Legal Support Centre | Toronto |
| Human Rights Tribunal | Toronto |
| Hung (Dr T J) | Alliston |
| Huronia Airport | Perkinsfield |
| Huronia Arts Academy | Barrie |
| Huronia Business Times | Barrie |
| Huronia Handweavers | Simcoe County |
| Huronia Korean Business Association | Barrie |
| Huronia Museum and Huron-Ouendat Village | Midland |
| Huronia Museum and Huron-Ouendat Village, Day Camp and Holiday Programs | Midland |
| Huronia Pregnancy Resource Centre | Midland |
| Huronia Rose Society | Barrie |
| Huronia Spinners Guild | Barrie |
| Huronia Symphony Orchestra | Barrie |
| Huronia Trails and Greenways | Simcoe County |
| Huronia Transition Homes | Midland |
| Huronia Transition Homes, Athena's Sexual Assault Counselling & Advocacy Centre | Barrie |
| Huronia Transition Homes, Choices for Children | Simcoe County |
| Huronia Transition Homes, La Maison Rosewood Shelter | Midland |
| Huronia Urgent Care Clinic | Barrie |
| Hydro One | Toronto |
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