| Canadian Mental Health Association Grey Bruce, Mental Health and Addiction Services, Hanover - 425 10th St, Choices Drug and Alcohol Counselling for Youth | Hanover |
| Canadian Mental Health Association Grey Bruce, Mental Health and Addiction Services, Owen Sound - 1101 2nd Ave E, Suite 207, Choices Drug and Alcohol Counselling for Youth | Owen Sound |
| Canadian Mental Health Association. Simcoe County Branch, Barrie - 128 Anne St S, Addiction Services | Barrie |
| Canadian Mental Health Association. Simcoe County Branch, Collingwood - 186 Erie St - Suite 101, Addiction Services | Collingwood |
| Canadian Mental Health Association. Simcoe County Branch, Midland, Addiction Services | Midland |
| Canadian Mental Health Association. Simcoe County Branch, Orillia - 50 Nottawasaga St, Addiction Services | Orillia |
| Chippewas of Nawash Unceded First Nation, Neyaashiinigmiing - 247 Prairie Rd, Harm Reduction and Outreach | Neyaashiinigmiing |
| Enaahtig Healing Lodge and Learning Centre, Main Office - Victoria Harbour | Tay |
| Grey Bruce Public Health, No physical location, Report A Drug Overdose | Owen Sound |
| Huron Perth Public Health, Clinton - London Rd, School Health - Huron County | Central Huron |
| John Howard Society of Peterborough | Peterborough |
| Muskoka Drug Strategy Coalition | Barrie |
| Peterborough Drug Strategy, Peterborough | Peterborough |
| Peterborough Public Health, Peterborough - King St, Substance Use Prevention and Harm Reduction Program | Peterborough |
| Rama Police Service | Chippewas of Rama First Nation |
| Right to Heal, Peterborough | Peterborough |
| Simcoe Muskoka District Health Unit, Community and Family Health Department, Barrie Head Office - 15 Sperling Dr | Barrie |
| Simcoe Muskoka District Health Unit, Various locations, Substance Use Prevention and Harm Reduction Programs | |
| Simcoe Muskoka Opioid Strategy, Online / Web Service | Barrie |