| Ability Online Support Network, Mono - Online Service | Mono |
| AccessOAP | Toronto |
| Adults in Motion, Day Program | Oakville |
| Autism Ontario, Halton Chapter - Mailing Address | Burlington |
| Autism Ontario | Toronto Downtown West |
| Belwood Lodge and Camp | Centre Wellington |
| Best Buddies Canada | Toronto |
| Central West Specialized Developmental Services, Developmental Services | Oakville |
| Central West Specialized Developmental Services, Halton Support Services | Oakville |
| Central West Specialized Developmental Services, Respite Services | Oakville |
| Child and Parent Resource Institute (CPRI) | London |
| Community Living Burlington | Burlington |
| Community Living North Halton | Milton |
| Community Living North Halton, Services for Children and Youth | Milton |
| Community Living Oakville | Oakville |
| Developmental Services Ontario Central West Region, Access to Services and Supports for Individuals with a Developmental Disability | Milton |
| ErinoakKids, Oakville site, Centre for Treatment and Development | Oakville |
| ErinoakKids Centre for Treatment and Development, Mississauga, Children's Treatment Centre | Mississauga |
| Geneva Centre for Autism | Toronto Downtown North |
| Halton Down Syndrome Association | Burlington |
| Halton. Social and Community Services - Children's Services, Children's Developmental Services and Family Supports | Oakville |
| Jake's House, Mississauga, Autism Services | Mississauga |
| Joy of Learning, Child Development and Private Educational Services | Oakville |
| Karis Disability Services, Developmental Disability Support Services | Waterloo Region |
| Kerry's Place, Kennedy Mississauga Resource Centre | Mississauga |
| Milton Autism | Milton |
| National Educational Association of Disabled Students, Ottawa | Ottawa |
| Ontario Autism Coalition | Ontario |
| Ontario Federation for Cerebral Palsy | Etobicoke North |
| Ontario. Ministry of Children, Community and Social Services, Ontario Autism Program | Toronto |
| Ontario. Ministry of Children, Community and Social Services, Special Services, Enhanced Respite and Assistance for Children with Disabilities (Mississauga), Mississauga | Mississauga |
| Project Autism Canada | Halton Region |
| ROCK, Autism and Behavioural Services | Halton Region |
| Special Olympics Ontario, Halton Hills Community | Halton Hills |
| Special Olympics Ontario, Burlington Community - Mailing Address | Burlington |
| Special Olympics Ontario, Milton Community | Milton |
| Special Olympics Ontario, Oakville Community - Mailing Address | Oakville |
| Variety Village, Toronto | Toronto |
| Woodview Mental Health and Autism Services, Woodview Learning Centre | Burlington |
