| ABR Autism Services of Northumberland | Cobourg |
| Asperger's Society of Ontario | Toronto Downtown North |
| Aspire Community & Developmental Services | |
| Autism Ontario [Central East] | Toronto |
| Autism Ontario [Central East], Owen Sound - Mailing Address, Grey Bruce Chapter | 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, Autism Services, Parry Sound | Parry Sound |
| Hands TheFamilyHelpNetwork.ca, Autism Services, Powassan | Powassan |
| Hands TheFamilyHelpNetwork.ca, Autism Services, Sundridge | 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, Durham Resource Centre, Durham Resource Centre | Oshawa |
| Kinark Child and Family Services, Barrie - Murray St, Autism Services - Centre-based Applied Behavioural Analysis (ABA) | Barrie |
| Kinark Child and Family Services, Kinark Outdoor Centre, Kinark Outdoor Center | Minden Hills |
| Kinark Child and Family Services. York Region, Ontario Autism Program - Single Point of Access, Markham Office | Markham |
| 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 |
| Stronger Together | Wasaga Beach |
| Unique Support Services | Port Elgin |