| HabiloMédias, Ottawa - Service en ligne, Media Smarts | Ottawa |
| Halton Healthcare | Halton (Région) |
| Halton Healthcare, Georgetown - Rue Guelph, Halton Diabetes Program | Georgetown |
| Halton Healthcare, Hôpital de Georgetown | Halton Hills |
| Halton Healthcare, Hôpital de Georgetown, Imagerie diagnostique, Georgetown Hospital | Halton Hills |
| Halton Healthcare, Hôpital de Georgetown, Services d'urgence, Georgetown Hospital | Halton Hills |
| Halton Healthcare, Hôpital de Georgetown, Work-Fit Total Therapy Centre (Progression and Maintenance), Georgetown Hospital | Georgetown |
| Halton Healthcare, Hôpital du district de Milton, Halton Diabetes Program | Milton |
| Halton Healthcare, Hôpital du district de Milton | Milton |
| Halton Healthcare, Hôpital du district de Milton, Imagerie diagnostique, Milton District Hospital | Milton |
| Halton Healthcare, Hôpital du district de Milton, Services d'urgence, Milton District Hospital | Milton |
| Halton Healthcare, Hôpital du district de Milton, Work-Fit Total Therapy Centre (Progression and Maintenance), Milton District Hospital | Milton |
| Halton Healthcare, Hôpital Trafalgar Memorial d'Oakville, Geriatric and Senior Specialty Services, Falls Prevention Clinic | Oakville |
| Halton Healthcare, Hôpital Trafalgar Memorial d'Oakville, Halton Diabetes Program, Oakville Trafalgar Memorial Hospital | Oakville |
| Halton Healthcare, Hôpital Trafalgar Memorial d'Oakville | Oakville |
| Halton Healthcare, Hôpital Trafalgar Memorial d'Oakville, Imagerie diagnostique, Oakville Trafalgar Memorial Hospital | Oakville |
| Halton Healthcare, Hôpital Trafalgar Memorial d'Oakville, Outpatient Clinics and Community Programs | Oakville |
| Halton Healthcare, Hôpital Trafalgar Memorial d'Oakville, Services d'urgence, Oakville Trafalgar Memorial Hospital | Oakville |
| Halton Healthcare, Hôpital Trafalgar Memorial d'Oakville, Work-Fit Total Therapy Centre (Progression and Maintenance), Oakville Trafalgar Memorial Hospital | Oakville |
| Halton Healthcare - Mississauga Halton Central Intake Program, Diabetes Education Programs (DEPs) | Oakville |
| Halton Healthcare - Mississauga Halton Central Intake Program, Oakville - Promenade Dorval, Services de soins pour les personnes diabétiques | Oakville |
| Halton Hills Family Health Team | Halton Hills |
| Halton Hills Family Health Team, Georgetown - 171 rue Guelph, Family Health Team | Halton Hills |
| Halton Hills Family Health Team, Georgetown - 199 promenade Princess Anne, Équipe de santé familiale | Halton Hills |
| Halton Hills Family Health Team, Georgetown - 1A Promenade Princess Anne, Équipe de santé familiale | Halton Hills |
| Halton Hills Family Health Team, Georgetown - 232A rue Guelph, Family Health Team | Halton Hills |
| Halton Hills Family Health Team, Georgetown - 99 avenue Sinclair, bureau 200, Family Health Team | Georgetown |
| Halton Hills Family Health Team, Georgetown - 99 avenue Sinclair, bureau 204, Family Health Team | Halton Hills |
| Halton Hills Family Health Team, Georgetown - Route 7, Équipe de santé familiale | Halton Hills |
| Halton Medix, Milton, Clinique médicale sans rendez-vous | Milton |
| Halton Pharmacy | Oakville |
| Halton. Access Halton, Access Halton - Centre d'information du gouvernement | Oakville |
| Halton. Municipalité régionale de Halton, Services régionaux | Oakville |
| Hawthorne Pharmacy | Milton |
| HealthSense Medical, Clinique sans rendez-vous | Oakville |
| Hébergement femmes Canada, Hébergementfemmes.ca | Ottawa |
| Hémophilie Ontario | Scarborough Nord |
| HighCare Pharmacy | Halton Hills |
| Hill Pharmacy | Halton Hills |
| Holly-Thompson Family Health Organization (FHO) | Milton |
| Home and Community Care Support Services Mississauga Halton, Bureau d'Etobicoke | Etobicoke Centre |
| Home and Community Care Support Services Mississauga Halton, Bureau de Milton | Milton |
| Home and Community Care Support Services Mississauga Halton, Bureau de Mississauga | Mississauga |
| Home Hospice Association | Etobicoke Sud |
| Hospice Palliative Care Ontario | Toronto Centre-ville Centre |
| Hospital for Sick Children (The) - Toronto Region Pediatric Virtual Urgent Care Clinic | Toronto Centre-ville Centre |
| Hydrocephalus Canada | Etobicoke Centre |
