| Hastings and Prince Edward District School Board | School Boards | 2025 | 856 | $120,520 |
| Hastings County BE | School Boards | 1997 | 1 | $106,414 |
| Hastings County Board of Education | School Boards | 1996 | 1 | $103,845 |
| Hastings Prince Edward Public Health | Hospitals & Boards of Public Health | 2024 | 15 | $138,086 |
| Hastings/Prince Edward Cnties Hlth Unit | Hospitals & Boards of Public Health | 2004 | 1 | $102,466 |
| Haven Toronto | Other Public Sector Employers | 2024 | 1 | $112,268 |
| Hawkesbury & District Gen.Hosp.In | Hospitals & Boards of Public Health | 1999 | 1 | $143,019 |
| Hawkesbury & District General | Hospitals & Boards of Public Health | 2004 | 3 | $125,755 |
| Hawkesbury & District General Hosp. | Hospitals & Boards of Public Health | 1997 | 1 | $115,500 |
| Hawkesbury & District General Hospital Inc. | Hospitals & Boards of Public Health | 1996 | 1 | $115,500 |
| Hawkesbury and District General Hospital | Hospitals & Boards of Public Health | 2025 | 260 | $130,577 |
| Head Injury Rehabilitation Ontario | Other Public Sector Employers | 2025 | 11 | $138,645 |
| Headwater Health Care Centre | Hospitals & Boards of Public Health | 2025 | 182 | $125,140 |
| Headwaters Health Care Ctr. | Hospitals & Boards of Public Health | 2005 | 4 | $134,840 |
| Headwaters HealthCare Centre | Hospitals & Boards of Public Health | 2003 | 2 | $137,682 |
| Health | Government of Ontario – Ministries | 2025 | 1,443 | $130,822 |
| Health and Supportive Care Providers Oversight Authority | Other Public Sector Employers | 2025 | 4 | $140,511 |
| Health Board Secretariat | Crown Agencies | 2013 | 5 | $134,084 |
| Health Boards Secretariat | Crown Agencies | 2025 | 3 | $165,722 |
| Health for All Family Health Team | Other Public Sector Employers | 2023 | 4 | $112,310 |
| Health ForceOntario Marketing and Recruitment Agency | Crown Agencies | 2019 | 6 | $120,226 |
| Health Integration Network of Champlain | Crown Agencies | 2006 | 2 | $175,465 |
| Health Integration Network of Hamilton Niagara Haldimand | Crown Agencies | 2006 | 3 | $177,816 |
| Health Integration Network of Toronto Central Op | Crown Agencies | 2006 | 3 | $194,190 |
| Health Integration Network of Waterloo Wellington Op | Crown Agencies | 2006 | 3 | $167,853 |
| Health Nexus | Other Public Sector Employers | 2025 | 2 | $169,291 |
| Health Nexus Santé | Other Public Sector Employers | 2014 | 1 | $115,351 |
| Health Professions Appeal & Review Board | Crown Agencies | 2008 | 1 | $149,148 |
| Health Professions Appeal and Review Board | Crown Agencies | 2025 | 3 | $150,942 |
| Health Program Initiatives (O/A Ontario Health) | Crown Agencies | 2019 | 5 | $193,034 |
| Health Promotion & Sport | Government of Ontario – Ministries | 2011 | 28 | $123,953 |
| Health Sciences North | Hospitals & Boards of Public Health | 2025 | 1,350 | $123,675 |
| Health Sciences North Research Institute | Other Public Sector Employers | 2023 | 3 | $176,000 |
| Health Serv. Restructuring Comm. | Crown Agencies | 1997 | 1 | $162,286 |
| Health Services Restructurint Commission | Other Public Sector Employers | 1996 | 1 | $108,365 |
| Health Shared Services Ontario (HSSOntario) | Crown Agencies | 2019 | 50 | $124,963 |
| Health Zone Nurse Practitioner-Led Clinic | Other Public Sector Employers | 2022 | 3 | $126,130 |
| HealthForceOntario Marketing and Recruitment Agency | Crown Agencies | 2018 | 7 | $133,927 |
| Hearst Kap S-R-F Counselling Services | Other Public Sector Employers | 2024 | 2 | $128,819 |
| Hearst Kap S-R-F Counselling Services/Services de Counselling de Hearst Kap S-R-F | Other Public Sector Employers | 2018 | 1 | $126,918 |
| Heart & Stroke Foundation of Ontario | Other Public Sector Employers | 2020 | 3 | $107,854 |
| Heart House Hospice Inc. | Other Public Sector Employers | 2012 | 1 | $110,828 |
| Hearthouse Hospice Inc | Other Public Sector Employers | 2022 | 2 | $136,406 |
| Hearthouse Hospice Incorporated | Other Public Sector Employers | 2016 | 1 | $101,205 |
| Heather Giffin, Speech-Language Pathology, Professional Corporation | Other Public Sector Employers | 2025 | 1 | $149,154 |
| Heidehof Home for the Aged | Other Public Sector Employers | 2018 | 2 | $113,492 |
| Hellenic Care for Seniors (Toronto) | Other Public Sector Employers | 2025 | 4 | $124,327 |
| Hellenic Home for the Aged Inc | Other Public Sector Employers | 2025 | 10 | $158,172 |
| Helping Hands Orillia | Other Public Sector Employers | 2025 | 4 | $109,831 |
| Henvey Inlet First Nation | Other Public Sector Employers | 2025 | 1 | $123,469 |
| Heritage Green Nursing Home | Other Public Sector Employers | 2025 | 18 | $119,853 |
| HF Care | Other Public Sector Employers | 2025 | 4 | $123,245 |
| HF Connecting Health Nurse Practitioner-Led Clinic | Other Public Sector Employers | 2023 | 4 | $124,678 |
| Hia Harmony in Action Windsor | Other Public Sector Employers | 2025 | 1 | $119,280 |
| Hiatus House | Other Public Sector Employers | 2025 | 1 | $106,634 |
| Hiawatha First Nation | Other Public Sector Employers | 2024 | 4 | $127,402 |
| Higher Education Quality Council of Ontario | Crown Agencies | 2025 | 7 | $159,218 |
| Highland Shores Children's Aid Society | Other Public Sector Employers | 2025 | 26 | $123,566 |
| Hillcrest Hospital | Hospitals & Boards of Public Health | 1996 | 1 | $109,406 |
| Hillel Lodge Long-Term Care Home of Ottawa | Other Public Sector Employers | 2025 | 9 | $122,137 |
| Hillel Lodge-Ottawa Jewish Home for the Aged | Other Public Sector Employers | 2015 | 1 | $120,000 |
| Hincks - Dellcrst Centre. | Other Public Sector Employers | 2003 | 3 | $140,162 |
| Hincks-Dellcrest Ctr. | Other Public Sector Employers | 2005 | 3 | $143,381 |
| Hincks-Dellcrest Treatment Centre | Other Public Sector Employers | 2016 | 8 | $149,272 |
| Hinks-Dellcrest Ctr. | Other Public Sector Employers | 2000 | 3 | $132,754 |
| HIV and AIDS Legal Clinic (Ontario) | Other Public Sector Employers | 2025 | 2 | $137,105 |
| Hlth Prof Appl & Review Board | Crown Agencies | 2003 | 1 | $119,580 |
| Hlth. Professions Appeal & Review Board | Crown Agencies | 2005 | 1 | $118,351 |
| Holland Bloorview Kids Rehabilitation Hospital | Hospitals & Boards of Public Health | 2025 | 326 | $142,538 |
| Holland Christian Homes Inc | Other Public Sector Employers | 2025 | 15 | $131,215 |
| Holland Marsh Drainage System Joint Municipal Services Board | Other Public Sector Employers | 2014 | 1 | $105,305 |
| Home and Community Support Services of Grey Bruce | Other Public Sector Employers | 2025 | 1 | $121,797 |
| Home Care Program for Metropolitan Toronto | Other Public Sector Employers | 1996 | 2 | $133,442 |
| Homes First Society | Other Public Sector Employers | 2011 | 1 | $112,240 |
| Homeward Family Shelter | Other Public Sector Employers | 2025 | 1 | $103,833 |
| Hong Fook Connecting Health Nurse Practitioner-Led Clinic | Other Public Sector Employers | 2016 | 1 | $102,276 |
| Hong Fook Mental Health Association | Other Public Sector Employers | 2024 | 4 | $118,949 |
| Hop Gen de Hawksbry & Dst Gen Hsp | Hospitals & Boards of Public Health | 1998 | 1 | $115,500 |
| Hope Grey Bruce Mental Health & Addictions Services | Other Public Sector Employers | 2010 | 1 | $102,979 |
| Hope Place Centre | Other Public Sector Employers | 2015 | 1 | $124,691 |
| Hope Place Centres | Other Public Sector Employers | 2025 | 2 | $141,907 |
| HopeGreyBruce Mental Health and Addictions Services | Other Public Sector Employers | 2017 | 1 | $119,660 |
| Hopewell Children's Homes Inc | Other Public Sector Employers | 2023 | 1 | $125,706 |
| Hopewell Support Services | Other Public Sector Employers | 2025 | 2 | $120,058 |
| Hornepayne Community Hospital | Hospitals & Boards of Public Health | 2025 | 8 | $134,082 |
| Horticultural Trades Association Inc (o/a Landscape Ontario) | Other Public Sector Employers | 2025 | 8 | $134,768 |
| Hospice Association of Ontario | Other Public Sector Employers | 2015 | 1 | $120,195 |
| Hospice Care Ottawa | Other Public Sector Employers | 2025 | 4 | $120,385 |
| Hospice Care Ottawa/La Maison de Soins Palliatifs d'Ottawa | Other Public Sector Employers | 2018 | 1 | $116,332 |
| Hospice Georgian Triangle | Other Public Sector Employers | 2025 | 4 | $118,876 |
| Hospice Huronia | Other Public Sector Employers | 2025 | 1 | $124,983 |
| Hospice Niagara | Other Public Sector Employers | 2025 | 5 | $130,569 |
| Hospice of Mississauga Inc | Other Public Sector Employers | 2025 | 4 | $143,425 |
| Hospice of Waterloo Region | Other Public Sector Employers | 2025 | 4 | $127,716 |
| Hospice of Windsor and Essex County Inc | Other Public Sector Employers | 2025 | 7 | $113,384 |
| Hospice Palliative Care Ontario | Other Public Sector Employers | 2025 | 2 | $138,563 |
| Hospice Peterborough | Other Public Sector Employers | 2025 | 4 | $108,961 |
| Hospice Simcoe | Other Public Sector Employers | 2025 | 2 | $128,644 |
| Hospice Toronto | Other Public Sector Employers | 2025 | 1 | $162,114 |
| Hospice Vaughan | Other Public Sector Employers | 2020 | 1 | $100,514 |