| ADAPT Halton, Oakville - Head Office, Alcohol, Drug and Gambling Assessment, Prevention and Treatment Services | Oakville |
| ADAPT Halton, Community Withdrawal Management Services | Halton Region |
| ADAPT Halton, Problem Gambling & Behavioural Addictions Services | Halton Region |
| ADAPT Halton, Youth Programs | Halton Region |
| Addiction Services Central Ontario, Aurora Main Office, Remote Single Session Counselling | Aurora |
| Associated Youth Services of Peel | Mississauga |
| breakingfreeonline | Ontario |
| Canadian Cancer Society - Ontario Division, Smokers' Helpline | Toronto Downtown North |
| Good2Talk, Telephone and Virtual Service | Toronto |
| Halton & Mississauga RAAM Clinic, Burlington, Rapid Access Addiction Medicine (RAAM) | Burlington |
| Halton & Mississauga RAAM Clinic, Oakville - Cornwall Rd, Rapid Access Addiction Medicine (RAAM) | Oakville |
| Halton & Mississauga RAAM Clinic, Oakville - Kerr St, Rapid Access Addiction Medicine (RAAM) | Oakville |
| Halton & Mississauga RAAM Clinic, Georgetown, Rapid Access Addiction Medicine (RAAM) | Halton Hills |
| Halton & Mississauga RAAM Clinic, Milton, Rapid Access Addiction Medicine (RAAM) | Milton |
| Halton Healthcare, Mississauga Halton Central Intake Program - one-Link - Addictions and Mental Health Services Referral | Oakville |
| Halton Healthcare, Oakville Trafalgar Memorial Hospital, Mental Health - Integrated Addiction Medicine Clinic | Oakville |
| Halton Healthcare, Oakville Trafalgar Memorial Hospital, Mental Health - Psychotherapy Services for Concurrent Disorders | Oakville |
| Halton. Halton Region Public Health, Stop Smoking Clinics | Halton Region |
| Hospital for Sick Children, Adolescent Medicine | Toronto |
| John Howard Society of Peel, Halton and Dufferin, Community Services | Milton |
| Métis Nation of Ontario, Brampton | Brampton |
| Ontario. Ministry of Health, Smoking Cessation Program | Toronto Downtown Central |
| Rapid Addiction Treatment Centre, Medical Treatment and Counselling for Addictions | Clarkson |
| St. Joseph's Healthcare Hamilton, Men's Addiction Service Hamilton (MASH) | Hamilton |
| St. Joseph's Healthcare Hamilton, Womankind Addiction Service | Hamilton |
| Wellbeings Pain Management and Dependency Clinic | Burlington |
| William Osler Health System, Peel Memorial Centre for Integrated Health and Wellness | Brampton |
| Women's College Hospital, Substance Use Service | Toronto |
