| Adoption Council of Ontario, Markham - Mailing Address | Markham |
| Beginnings Family Services | Hamilton |
| Boost Child & Youth Advocacy Centre | Toronto |
| Burlington. Recreation, Community and Culture | Burlington |
| Burlington. Recreation, Community and Culture, Community Supports | Burlington |
| Canada. Members of Parliament - Halton Region, Burlington North - Milton West Electoral District - Milton Office, Federal Services to Constituencies | Milton |
| Canada. Members of Parliament - Halton Region, Burlington Electoral District - Burlington Office, Federal Services to Constituencies | Burlington |
| Canada. Members of Parliament - Halton Region, Milton East - Halton Hills South Electoral District, Federal Services to Constituencies | Georgetown |
| Canada. Members of Parliament - Halton Region, Oakville West Electoral District - Oakville Office, Federal Services to Constituencies | Oakville |
| Canada. Members of Parliament - Halton Region, Oakville East Electoral District - Oakville Office, Federal Services to Constituencies | Oakville |
| Canada. Members of Parliament - Wellington County, Wellington-Halton Hills North Electoral District - Fergus Office, Federal Services to Constituencies - Wellington County | Centre Wellington |
| Canadian Association for Girls in Science, Oakville Chapter - Mailing Address | Oakville |
| Canadian Mental Health Association, Oakville - Halton Region Branch Head Office, Mental Health Services | Oakville |
| Canadian Mental Health Association, Education and Training | Oakville |
| Canadian Mental Health Association, Mobile Outreach Team - COAST - Crisis Outreach and Support Team | Oakville |
| Canadian Mental Health Association, Milton and Halton Hills, Mental Health Services | Milton |
| Canadian Paediatric Society, Caring for Kids | Ottawa |
| Children and Youth Grief Network | Peel Region |
| Children's Mental Health Ontario | Toronto |
| Country Heritage Park, Food and Farm Education, Field Trip Venue, Private Tours, Heritage Venue, Event Venue and Operational Farm | Milton |
| Distress Centres of Greater Toronto, Survivor Support Program | Toronto |
| Drug Free Kids Canada, Parent Support Hub | Ottawa |
| Food4Kids Halton, Halton North | Halton Hills |
| Halton Children's Aid Society, Burlington Office | Burlington |
| Halton Children's Aid Society, Milton Office | Milton |
| Halton Day Care Services Licensed Home Child Care Agency, Licensed Home Child Care Agency | Milton |
| Halton District School Board, Special Education Advisory Committee | Halton Region |
| Halton Healthcare, Oakville Trafalgar Memorial Hospital, Mental Health - Child and Adolescent Clinic | Oakville |
| Halton Healthcare, Oakville Trafalgar Memorial Hospital, Mental Health - Child and Adolescent Services | Oakville |
| Halton Healthcare, Oakville Trafalgar Memorial Hospital, Mental Health - Outpatient Services | Oakville |
| Halton Hills. Recreation & Parks | Georgetown |
| Halton Information Providers | Oakville |
| Halton Regional Police Service, Youth Programs | Oakville |
| Halton. Halton Region Public Health | Oakville |
| Halton. Halton Region Public Health, Early Years Health | Oakville |
| Halton. Halton Region Public Health, School Years Health | Oakville |
| Halton. Regional Municipality of Halton, Regional Services | Oakville |
| Halton. Social and Community Services | Oakville |
| Halton. Social and Community Services - Children's Services, Child Care Services | Oakville |
| Heartache2Hope, HOPELINE | Oakville |
| High5 Day Care Inc, High5 Home Child Care - Licensed Home Child Care Agency | Halton North |
| Hospice Mississauga, Hospice Palliative Helpline | Mississauga |
| Hospital for Sick Children | Toronto |
| How to Find - Crisis and Distress Services, Halton Region | Halton Region |
| Joseph Brant Hospital, Burlington, Mental Health Services | Burlington |
| Joseph Brant Hospital, Nina's Place: Sexual Assault & Domestic Violence Care Centre | Burlington |
| Kids Help Phone | Toronto |
| Learning Through Love, Licensed Home Child Care Agency | Georgetown |
| Lighthouse for Grieving Children and Families, Grief and Bereavement Support Services | Oakville |
| Little Leaders Licensed Home Child Care Agency, Licensed Home Child Care Agency | Burlington |
| Milton Community Resource Centre, CHERISH Home Child Care - Licensed Home Child Care Agency | Halton North |
| Milton. Community Services, Milton Youth Task Force | Milton |
| Muslim Children's Aid and Support Services, Child, Youth and Family Support Services | Toronto |
| Oak Park Neighbourhood Centre, Family & Preschool Programs | Oakville |
| One Stop Talk | Ontario |
| Ontario. Ministry of Children, Community and Social Services, Burlington - Itabashi Way, Ontario Disability Support Program | Burlington |
| Ontario. Ministry of Education, Trillium Demonstration School | Milton |
| Our Little Angels Academy Licensed Home Child Care Agency, Licensed Home Child Care Agency | Milton |
| Parents for Children's Mental Health, Burlington Chapter, Parent/Caregiver Support Group | Burlington |
| ROCK, Access and System Navigation | Halton Region |
| ROCK, Queer@ROCK | Halton Region |
| SMILE Canada, Support Services for Children and Youth | Toronto |
| Speech and Stuttering Institute | Toronto |
| The Halton Resource Connection, Child Care Directory and Information Line | Milton |
| Today's Family Early Learning and Child Care, Hamilton - Central Administration Office, Licensed Home Child Care Agency | Hamilton (City of) |
| TVO ILC, TVO Kids | Toronto |
| TVO ILC, TVO Learn | Toronto |
| Variety Village, Toronto | Toronto |
| War Amps (The), Ottawa - National Headquarters | Ottawa |
| Wee Watch Burlington Licensed Home Child Care Agency, Licensed Home Child Care | Burlington |
| Wee Watch Milton and Halton Hills Licensed Home Child Care Agency, Licensed Home Child Care | Milton |
| Wee Watch Oakville Licensed Home Child Care Agency, Licensed Home Child Care | Oakville |
| Woodview Mental Health and Autism Services | Burlington |
| YMCA of Oakville | Oakville |
