| Adoption Council of Ontario, Markham - Mailing Address | Markham |
| Alcohol and Gaming Commission of Ontario, Alcohol and Gaming Regulation | Toronto |
| Canadian Mental Health Association. Simcoe County Branch, Community Awareness Program | Barrie |
| Canadian Mental Health Association. Simcoe County Branch, Early Psychosis Intervention | Barrie |
| Canadian Mental Health Association. Simcoe County Branch, Housing Support, Barrie - 134 Anne St S | Barrie |
| Canadian Red Cross - Simcoe Muskoka, Simcoe Muskoka Branch, Prevention and Safety, First Aid, CPR, Water Safety, Psychological First Aid | Barrie |
| College of psychologists and behaviour analysts of Ontario (The) | Toronto Downtown North |
| Family Mental Health Initiative of Simcoe County | Barrie |
| Glowing Hearts Charity, No Physical Address, Mental Health Counselling | Barrie |
| Kinark Child and Family Services, Barrie ABA Centre, Autism Services - Centre-based Applied Behavioural Analysis (ABA) | Barrie |
| Patient / Client and Family Council, Penetanguishene | Penetanguishene |
| Playsmart Centre, Georgian Downs | Innisfil |
| Royal Victoria Regional Health Centre, Barrie - 201 Georgian Dr - 3rd Floor, Community Treatment Order Coordination Service | Barrie |
| Simcoe County Suicide Awareness Council, No Physical Address | Barrie |
| Simcoe Peer Support for Mental Health and Addictions, Collingwood | Collingwood |
| Stevenson Memorial Hospital, Mary McGill Community Mental Health Program | New Tecumseth |
| YMCA of Simcoe/Muskoka, Barrie - Bayfield St, Youth Gambling Awareness Program | Barrie |