| ABR Autism Services of Northumberland | Cobourg |
| Asperger's Society of Ontario | Toronto Downtown North |
| Aspire Community & Developmental Services | Barrie |
| Autism Ontario [Central East] | Toronto |
| Autism Ontario [Central East], Autism Ontario Central East | Owen Sound |
| Blooming Acres | Springwater |
| Canopy Support Services, Peterborough, Autism Services | Peterborough |
| Catulpa Community Support Services, Barrie Office, Ontario Autism Program - Family Service Coordination | Barrie |
| Children's Treatment Network of Simcoe York | Barrie |
| Hands TheFamilyHelpNetwork.ca, Parry Sound, Autism Services | Parry Sound |
| Hands TheFamilyHelpNetwork.ca, Powassan, Autism Services | Powassan |
| Hands TheFamilyHelpNetwork.ca, Sundridge, Autism Services | Sundridge |
| Inclusive Milestones Child Development Centres, Clinical Services | Barrie |
| Integrated Autism Consulting, Barrie | Barrie |
| Kawartha Lakes Autism Support, Kennedy Place | Kawartha Lakes |
| Kerry's Place Autism Services - Simcoe County, Barrie | Barrie |
| Kerry's Place Autism Services, Durham, Oshawa, Autism Residential and Support Services | Oshawa |
| Kinark Child and Family Services, Barrie ABA Centre, Autism Services - Centre-based Applied Behavioural Analysis (ABA) | Barrie |
| Kinark Child and Family Services, Kinark Outdoor Centre, Kinark Outdoor Center | Minden Hills |
| Oakdale Child and Family Services, Oakdale Child and Family Service | Springwater |
| Ontario. Ministry of Children, Community and Social Services, Ontario Autism Program | Toronto |
| Spectrum Acres | East Zorra-Tavistock |
| Unique Support Services | Port Elgin |