| Habitat for Humanity, GTA | Brampton |
| Habitat for Humanity Halton-Mississauga | |
| Hakuna Matata Child Care Centre Inc. | Mississauga (City of) |
| Halton Women's Place | Burlington |
| Halton-Peel Community Aphasia Programs, Brampton | Brampton |
| Happy Life Child Care Centre | Brampton |
| Har Tikvah Congregation of Brampton | Brampton |
| Harvest Ontario | Ontario |
| Hawthorn Woods Community | Brampton |
| Headwater Hills Montessori School | Caledon |
| Headwaters Health Care Centre | Orangeville |
| Headwaters Health Care Centre, Ambulatory Services, Diabetes Care | Orangeville |
| Headwaters Health Care Centre, Diganostic Imaging | Orangeville |
| Headwaters Health Care Centre, Emergency Department | Orangeville |
| Headwaters Health Care Centre, Emergency Department - Mental Health | Orangeville |
| Headwaters Health Care Centre, Rehab Services - Speech-Language Pathology Services | Orangeville |
| Headwaters Health Care Centre, Rehabilitation Services - Physiotherapy | Orangeville |
| Headwaters Health Care Centre, Sexual Assault and Domestic/Intimate Partner Violence | Orangeville |
| Headwaters Health Care Centre, Surgical Services | Orangeville |
| Headwaters Walk In Clinic | Orangeville |
| Heal+hpoint Medicine, Bramalea Walk In Clinic | Brampton |
| Healing Cycle Foundation (The) | Mississauga |
| Health First Wellness Centre | Bolton |
| Health+Plex Medical Centre - Walk-in Clinic | Brampton |
| Healthline Pharmacy | Brampton |
| Healthy Hearts Counselling | |
| Hear Now Hearing - Malton | Mississauga |
| Hearing Life, Bolton | Bolton |
| HearingLife - formerly ListenUp Canada, Bolton | Bolton |
| HearingLife - formerly ListenUp Canada, Brampton Location | Brampton (City of) |
| HearingLife - Mississauga locations, formerly ListenUp | Mississauga |
| HearingLife, Brampton North, formerly ListenUp - Brampton North | Brampton |
| Heart Lake Community Food Cupboard | Brampton |
| Heart Lake Health Center | Brampton |
| Heart Lake The Compounding Centre | Brampton |
| Heart to Home Meals, Brampton | Brampton |
| Hearts in Bloom Academy | Meadowvale |
| Help Call, Personal Emergency Response Services | Orangeville |
| Help Mobility | Mississauga |
| Help Now Healthcare | |
| Henderson's Woodbridge Medical Pharmacy | Woodbridge |
| Heritage Caledon | Caledon East |
| Heritage Glen Pharmacy | Mississauga |
| Heritage House Retirement Residence | Mississauga |
| Heritage Mississauga, Robinson-Adamson Historic House, The Grange | Mississauga |
| Hide-N-Seek Daycare Inc. | Brampton |
| Highway Terraces, Seniors Apartments | Etobicoke North |
| Hike Ontario | |
| Hillcrest Private School | Orangeville |
| Historic Bovaird House | Brampton |
| Holland Christian Homes, Covenant Tower, Senior Living | Brampton |
| Holland Christian Homes, Hope Tower, Senior Living | Brampton |
| Holland Christian Homes, King Tower, Senior Living | Brampton |
| Holland Christian Homes, Peace Tower, Senior Living | Brampton |
| Holland Christian Homes, Providence Tower, Senior Living | Brampton |
| Holland Christian Homes, Trinity Tower, Senior Living | Brampton |
| Holy Trinity Asian Fellowship | |
| Home Instead Senior Care, Brampton, Caledon, Halton Hills, Kleinburg, New Tecumseth, Orangeville and Woodbridge | Brampton |
| Home Instead Senior Care, Mississauga | Mississauga |
| Homestarts Incorporated | Mississauga |
| Homewatch CareGivers of Mississauga | Mississauga |
| Hooper's Pharmacy | Brampton |
| Hooper's Pharmacy | Mississauga |
| Hope + Me - Mood Disorders Association of Ontario, Peer Support Groups, Structured One-on-One Peer Support and Counselling, Drop-in One-on-One Support, Recovery Programs | Toronto North |
| Hope Autism Services | Mississauga |
| Hope Centre Christian Mission | Brampton |
| HOPE ENDOORS | |
| Hope Place Centres, Men's Live-In Treatment Program | Hornby |
| Hope Place Centres, Women's Treatment Centre | Milton |
| Horizons Opioid Treatment Services, Brampton Location | Brampton |
| Horizons Opioid Treatment Services, Etobicoke Location | Etobicoke North |
| Hospice Dufferin | Orangeville |
| Hospice Mississauga | Mississauga |
| Hospital for Sick Children, Ontario Poison Centre | Toronto Central |
| House of Wonder Early Learning Centre, House of Wonder Early Learning Centre Ltd. | Mississauga (City of) |
| Housing Client Services | Brampton |
| Housing for Older Adults in Peel (H.O.A.P.), Working Group | Mississauga |
| Howden Medical Clinic | Brampton |
| Howden YMCA Child Care Centre | Bramalea |
| Human Services Department, Region of Peel, Early Years & Child Care Services | Brampton |
| Humber Child Development Centre | Etobicoke North |
| Humber Green Pharmacy | Etobicoke North |
| Humber Valley Heritage Trail Association, Bolton Chapter | Bolton |
| Humber Valley Terrace | Etobicoke North |
| Hunter Driver Education | Bolton |
| Hunt's Healthcare | Etobicoke North |
| Huron Park Montessori | Erin Mills |
| Huron Square Medical Centre | Mississauga |
| Hydro One Networks Inc | Toronto |
| Hyland Centre Child Care | Shelburne |