| 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 | Owen Sound |
| Grey Bruce Public Health, Report A Drug Overdose, No physical location | Owen Sound |
| Huron Perth Public Health, Clinton - London Rd, School Health - Huron County | Central Huron |
| John Howard Society of Peterborough | Peterborough |
| MADD Canada, Mailing Address, Barrie Simcoe Chapter | Barrie |
| Muskoka Drug Strategy Coalition | Barrie |
| Peterborough Drug Strategy, Peterborough | Peterborough |
| Peterborough Public Health, Peterborough - King St, Substance Use Prevention and Harm Reduction Program | Peterborough |
| Peterborough Public Health, Peterborough - King St, Tobacco Use Prevention | Peterborough |
| Rama Police Service | Chippewas of Rama First Nation |
| Right to Heal, Peterborough | Peterborough |
| Simcoe Muskoka District Health Unit, Barrie Head Office - 15 Sperling Dr, Community and Family Health Department | Barrie |
| Simcoe Muskoka District Health Unit, Barrie Head Office - 15 Sperling Dr, Environmental Health Department | Barrie |
| Simcoe Muskoka District Health Unit, Collingwood Branch - 280 Pretty River Pkwy, Environmental Health Department | Collingwood |
| Simcoe Muskoka District Health Unit, Cookstown Branch - 25 King St S, Environmental Health Department | Cookstown |
| Simcoe Muskoka District Health Unit, Gravenhurst Branch - 5 Pineridge Gate, Environmental Health Department | Gravenhurst |
| Simcoe Muskoka District Health Unit, Huntsville Branch - 34 Chaffey St, Environmental Health Department | Huntsville |
| Simcoe Muskoka District Health Unit, Midland Branch - Hugel Ave, Environmental Health Department | Midland |
| Simcoe Muskoka District Health Unit, Orillia Branch - 169 Front St S, Environmental Health Department | Orillia |
| Simcoe Muskoka District Health Unit, Various locations, Substance Use Prevention and Harm Reduction Programs | |
| Simcoe Muskoka Opioid Strategy, Online / Web Service | Barrie |