| AccessOAP | Toronto |
| Asperger's Society of Ontario | Toronto Downtown North |
| Ausum Charity for Autism | Streetsville |
| Autism Ontario, Halton Chapter - Mailing Address | Burlington |
| Autism Ontario | Toronto Downtown West |
| Child and Parent Resource Institute (CPRI) | London |
| Community Living North Halton, Services for Children and Youth | Milton |
| ErinoakKids, Oakville Site, Centre for Treatment and Development | Oakville |
| ErinoakKids Centre for Treatment and Development, Children's Treatment Centre (Brampton) | Brampton |
| ErinoakKids Centre for Treatment and Development, Mississauga, Children's Treatment Centre (Mississauga) | Mississauga |
| Geneva Centre for Autism | Toronto Downtown North |
| Halton. Social and Community Services - Children's Services, Children's Developmental Services | Oakville |
| Jake's House | Mississauga |
| Joy of Learning, Child Development and Private Educational Services | Oakville |
| Kerry's Place, Kennedy Mississauga Resource Centre | Mississauga |
| Milton Autism | Milton |
| Ontario Autism Coalition | Ontario |
| Ontario. Ministry of Children, Community and Social Services, Ontario Autism Program | Toronto |
| Project Autism Canada | Halton Region |
| ROCK, Autism and Behavioural Services | Halton Region |
| SocialliiASD, EmploymentWorks | Burlington |
| We Rock the Spectrum Kid's Gym | Oakville |
| Wildwood Academy | Oakville |
| Woodview Mental Health and Autism Services | Burlington |
| Woodview Mental Health and Autism Services, Woodview Learning Centre | Burlington |
