| | Organization Name(s) | Located In |
 | Autism Ontario - Niagara Chapter | St Catharines |
 | Bethesda, Administrative Services | Thorold |
 | Bethesda, Community Response Program | Thorold |
 | Bethesda, Employment and Day Activities | Thorold |
 | Bethesda, Residential and Respite Support | Thorold |
 | Bethesda, Twin Lakes Clinical Services, Hamilton Location | Hamilton Mountain East |
 | Christ Lutheran Church, SOUL Program | St Catharines |
 | Christian Horizons, Horizon House Niagara 1 | Welland |
 | Christian Horizons, Horizon House Niagara 2 | St Catharines |
 | Christian Horizons, Horizon House Niagara 3 | Port Colborne |
 | Community Living - Fort Erie, Accommodation Services | Fort Erie |
 | Community Living - Fort Erie, Administration/Community Services | Fort Erie |
 | Community Living - Fort Erie, Community Supports | Fort Erie |
 | Community Living - Fort Erie, Family Support Services | Fort Erie |
 | Community Living - Grimsby, Lincoln and West Lincoln, Administration/Community Services | Beamsville |
 | Community Living - Grimsby, Lincoln and West Lincoln, Children's Weekend Respite Program | Beamsville |
 | Community Living Port Colborne - Wainfleet, Administrative Office | Port Colborne |
 | Community Living Port Colborne - Wainfleet, Family Support Program | Port Colborne |
 | Community Living Port Colborne - Wainfleet, Residential Services | Port Colborne |
 | Community Living Port Colborne - Wainfleet, Volunteer Program | Port Colborne |
 | Community Living St Catharines, Administrative Offices | St Catharines |
 | Community Living St Catharines, Adult Support Programs | St Catharines |
 | Community Living St Catharines, Community Support Services - Children | St Catharines |
 | Community Living St Catharines, St Catharines Preschool Services | St Catharines |
 | Community Living St Catharines, Therapeutic Support Program | St Catharines |
 | Community Living Welland Pelham | Welland |
 | Community Living Welland Pelham, Children's Services | Welland |
 | Community Living Welland Pelham, Employment Services | Welland |
 | Community Living Welland Pelham, Family Support Services | Welland |
 | Community Living Welland Pelham, Residential Alternatives | Welland |
 | Community Living Welland Pelham, Welland Packaging | Welland |
 | Contact Brant For Children's and Developmental Services | Brantford |
 | Contact Hamilton for Children's and Developmental Services, Developmental Services Ontario Hamilton-Niagara Region (DSO HNR) | Hamilton Central |
| | Developmental Services System- Niagara | Thorold |
 | District School Board of Niagara | St Catharines |
 | District School Board of Niagara, Special Education Services | Niagara-on-the-Lake |
| | Down Syndrome Caring Parents, Niagara | Niagara Falls |
 | EquineAbility Therapeutic Riding Centre | Stevensville |
 | Family Counselling Centre Niagara, Fort Erie | Fort Erie |
 | Family Counselling Centre Niagara, Niagara Falls | Niagara Falls |
 | Family Counselling Centre Niagara, Niagara Falls, Walk-In Counselling Clinic | Niagara Falls |
 | Family Counselling Centre Niagara, St Catharines | St Catharines |
 | Family Counselling Centre Niagara, Welland | Welland |
 | Family Counselling Centre of Brant, Developmental Services, Deafblind Outreach Services | Hamilton Mountain Central |
 | HATS - Horse Alternative Therapeutic Services | Pelham |
 | HeartSpace Physical Therapy for Children | St Catharines |
| | Kids On the Block | St Catharines |
 | Mainstream, Options Niagara, A Foundation Initiative | St Catharines |
 | Mainstream, Resource Centre | St Catharines |
 | Mainstream, St Catharines Mainstream Non-Profit Housing Project | St Catharines |
 | Maison d'Amis Inc (House of Friends) | Fort Erie |
 | Niagara Support Services, Administration Office | Port Robinson |
 | Niagara Support Services, Community Employment and Vocational Services | Niagara Falls |
| | Niagara Support Services, Community Skills Program | Port Robinson |
 | Niagara Support Services, Family Support Services | Port Robinson |
 | Niagara Support Services, Niagara Falls, Supported Living/Enhanced Supported Living Programs | Port Robinson |
 | Niagara Support Services, Preschool Services | Port Robinson |
 | Niagara Support Services, Residential Services | Port Robinson |
 | Niagara Training & Employment Agency, Regional Respite Program | Niagara Falls |
 | Niagara Training and Employment Agency Inc (NTEC) | Port Robinson |
 | Niagara. Region Public Health, Infant and Child Development Services - Niagara | Thorold |
 | Ontario. Ministry of Children and Youth Services, Child and Parent Resource Institute (CPRI) | London |
 | Ontario. Ministry of Community and Social Services and Ministry of Children and Youth Services | Hamilton Central |
 | Ontario. Ministry of Community and Social Services and Ministry of Children and Youth Services, Assistance for Children with Severe Disabilities | Hamilton Central |
 | Ontario. Ministry of Community and Social Services and Ministry of Children and Youth Services, Assistance for Children with Severe Disabilities, Special Services at Home | Hamilton Central |
 | Pathstone Mental Health, Schmon Parkway Site, Psycho-Educational Assessments | Thorold |
 | Red Roof Retreat | Niagara-on-the-Lake |
 | Skerrett Psychology Professional Corporation | Fort Erie |
 | Southern Network of Specialized Care, Building Health Care Capacity Initiative | Hamilton Mountain Central |
 | Special Olympics Ontario, Niagara and Haldimand County | Toronto (City of) |