| Action Canada for Sexual Health and Rights | Ottawa |
| Afghan Association of Ontario, Canada, Toronto | Toronto |
| Akwaba Cultural Exchange, Cultural Heritage Group | Milton |
| Aldershot Lions Club | Burlington |
| Aplastic Anemia and Myelodysplasia Association of Canada | Brighton (Municipality of) |
| Asthma Canada | Toronto Downtown North |
| Autism Ontario, Halton Chapter - Mailing Address | Burlington |
| Black Lives Matter (Canada) | Toronto |
| Black Mentorship Inc, Professional Mentorship Program | Oakville |
| Boost Child & Youth Advocacy Centre | Toronto |
| Burlington Caribbean Connection (The) | Burlington |
| Burlington Lions Club | Burlington |
| BurlingtonGreen Environmental Association | Burlington |
| CAAN, Mailing Address | |
| 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, 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 |
| Canada. Office of the Federal Ombudsperson for Victims of Crime | Ottawa |
| Canadian Association of the Deaf | Ottawa |
| Canadian Caribbean Association of Halton, Cultural Heritage Group | Oakville |
| Canadian Federation of University Women, Burlington Chapter | Burlington |
| Canadian Federation of University Women, Milton and District Chapter - Mailing Address | Milton |
| Canadian Hard of Hearing Association, Canadian Hard of Hearing Association Advocacy and Support Groups | Hamilton |
| Canadian Hard of Hearing Association, Ottawa, Canadian Hard of Hearing Association, Ottawa | Ottawa |
| Canadian Hemophilia Society, Toronto and Central Ontario Region, Blood Disorders Information and Support | Scarborough North |
| Canadian Human Rights Commission | Ottawa |
| Canadian Indian Association of Halton Region, Cultural Heritage Group | Oakville |
| Canadian Japanese Cultural Centre of Hamilton, Canadian Japanese Cultural Centre of Hamilton Programs | Hamilton |
| Canadian Liver Foundation, Markham - National Office and Toronto/GTA Chapter | Markham |
| Canadian Mental Health Association, Oakville - Halton Region Branch Head Office, Mental Health Services | Oakville |
| Canadian Mental Health Association, Milton and Halton Hills, Mental Health Services | Milton |
| Canadian Resource Centre for Victims of Crime | Ottawa |
| Canadian Spondyloarthritis Association | Toronto Downtown |
| CareNow Ontario | Toronto Downtown East |
| Centre for Diverse Learners | Burlington |
| CFUW Georgetown | Georgetown |
| CFUW Oakville | Oakville |
| Children and Youth Grief Network | Peel Region |
| Chinmaya Mission Halton Region | Milton |
| Civitan Club of Oakville | Oakville |
| Community Development Halton | Acton |
| Community Living North Halton | Milton |
| Conservation Halton | Burlington |
| Croatian Social and Cultural Centre | Halton Hills |
| Crohn's and Colitis Canada | Toronto Downtown Central |
| Crohn's and Colitis Canada, Halton Region Chapter | Halton Region |
| Custody Review Board | Toronto |
| Dar Foundation | Oakville |
| Destination Campbellville Community Association | Milton |
| Diabetes Canada | Toronto Downtown Central |
| Distress and Crisis Ontario | Waterloo |
| Easter Seals Ontario, West Region - Halton Region District | Burlington |
| Epilepsy South Central Ontario, Mississauga | Mississauga |
| Field and Stream Rescue Team | Burlington |
| Food4Kids Halton, Halton South | Burlington |
| Food4Kids Halton, Halton North | Halton Hills |
| Freshwater Conservation Canada - Greg Clark Chapter, Environmental Improvement Group | Halton Region |
| Friendship Bench (The) | Oakville |
| Front Line Outreach | Oakville |
| Gay Men's Sexual Health Alliance | Toronto Downtown East |
| Genetic Aortic Disorders Association Canada, Mississauga | Mississauga |
| Greek Community of Burlington and District | Burlington |
| Greenpeace Canada, Community Programs | Toronto |
| Guru Ravidas Gurdwara Sahib Burlington | Burlington |
| Halton Alive | Burlington |
| Halton Black History Awareness Society | Burlington |
| Halton Black Voices | Halton Region |
| Halton Catholic Children's Foundation | Burlington |
| Halton Community and Cultural Association (The) | Burlington |
| Halton Community Housing Corporation | Oakville |
| Halton District School Board, Gary Allan Learning Centre, Burlington - Head Office, Gary Allan Learning Centre | Burlington |
| Halton Environmental Network | Oakville |
| Halton Food for Thought, Student Nutrition Programs | Burlington |
| Halton Islamic Association | Burlington |
| Halton Learning Foundation | Burlington |
| Halton Regional Police Service, Youth Programs | Oakville |
| Halton Rotaract | Halton Region |
| Hemophilia Ontario | Scarborough North |
| High5 Day Care Inc, High5 Home Child Care - Licensed Home Child Care Agency | Halton North |
| Hindu Swayamsevak Sangh, Halton Region | Halton Region |
| Human Rights Tribunal of Ontario | Toronto |
| Hum-WE Women's Hub, Support Services for Women | Milton |
| Hydrocephalus Canada | Etobicoke Central |
| Immigration and Refugee Board of Canada. Central Region | Toronto |
| Indigenous Diabetes Health Circle, Indigenous Diabetes Health Circle, Niagara Region | Thorold |
| Indspire, Community Programs | Toronto |
| Inspire Halton | Halton Hills |
| Islamic Community Centre of Milton | Milton |
| Islamic Community of Oakville | Oakville |
| Italian Canadian Club of Burlington | Burlington |
| Italian Cultural Centre of Milton | Milton |
| Joyce Family Foundation (The) | Burlington |
| Kidney Foundation of Canada, Ontario Branch | Mississauga |
| Learning Disabilities Association of Ontario | Etobicoke |
| Leukemia and Lymphoma Society of Canada - Ontario Region | North York East |
| Lung Health Foundation | North York East |
| Lymphedema Association of Ontario | Etobicoke South |
| Madina Institute Canada, Oakville, Madina Programs | Oakville |
| May Court Club of Oakville (The) | Oakville |
| Melanoma Canada | Oakville |
| Métis Nation of Ontario, Toronto Regional Office | Toronto Downtown East |
| Métis Women's Circle, Métis Women's Circle Programs and Events | Hamilton |
| Milton Chinese Canadian Association | Milton |
| MiltonGreen Environmental Association | Milton |
| MitoCanada Foundation | Oakville |
| Mood Disorders Association of Ontario, Peer Supports and Services (Toronto) | Toronto |
| Mosaic Foundation for Youth and Women | Burlington |
| MS Canada | Toronto Downtown Central |
| Muslim Association of Milton, Oakville - Halton Islamic Community Centre, Cultural Heritage Group | Oakville |
| Native Women's Association of Canada | Gatineau |
| Nigerian Community Halton | North Oakville |
| Oakville Chinese Network Society, Cultural Heritage Group | Oakville |
| Oakville Community Centre for Peace, Ecology and Human Rights | Oakville |
| Oakville Lions Club | Oakville |
| Oakvillegreen Conservation Association | Oakville |
| OCASI - Ontario Council of Agencies Serving Immigrants, OCASI | Toronto |
| Ombudsman Ontario, Children and Youth Unit | Toronto |
| Ontario Aboriginal HIV/AIDS Strategy | Toronto Downtown North |
| Ontario Autism Coalition | Ontario |
| Ontario Health atHome - Niagara | Hamilton |
| Ontario Human Rights Commission | Toronto |
| Ontario Network of Sexual Assault / Domestic Violence Treatment Centres | Toronto |
| Ontario Prader-Willi Syndrome Association | York |
| Ontario. Ministry of Children, Community and Social Services, Burlington - Itabashi Way, Ontario Disability Support Program | Burlington |
| Ontario. Ministry of Health, Public Health Care | Toronto Downtown Central |
| Ontario. Ministry of Labour, Immigration, Training and Skills Development, Halton Region Office, Apprenticeship Office | Oakville |
| Ontario. Ministry of Labour, Immigration, Training and Skills Development, Global Experience Ontario | Toronto |
| Optimist Club of Burlington | Burlington |
| Optimist Club of Oakville | Oakville |
| Osteoporosis Canada | North York East |
| Our Kids Network, Halton Youth Initiative | Halton Region |
| Ovarian Cancer Canada | North York Central |
| PKD Foundation of Canada | Etobicoke Central |
| Polish National Union of Canada | Burlington |
| Prime Earth, Youth Empowerment & Environmental Conservation Organization | Burlington |
| PRISM Halton | Halton Region |
| Protecting Escarpment Rural Land | Burlington |
| Retired Teachers of Ontario, Halton District 15 - No Physical Address | Halton Region |
| ROCK, Queer@ROCK | Halton Region |
| Rotary International, Rotary Burlington Lakeshore | Burlington |
| Rotary International, Milton Rotary | Milton |
| Service Canada - Wellington County, Guelph Service Canada Centre, Federal Government Information Lines | Guelph |
| Sexual Assault & Violence Intervention Services of Halton (SAVIS) | Oakville |
| Sexual Assault & Violence Intervention Services of Halton (SAVIS), Halton Collaborative Against Human Trafficking | Halton Region |
| Suffah Academy, Milton, Masjid Khadijah | Milton |
| Sustainable Milton | Milton |
| Threads of Life - Association for Workplace Tragedy Family Support | London |
| Vaishno Devi Mandir, Hindu Temple | Oakville |
| Vision Loss Rehabilitation Ontario, Halton-Peel Region, Mississauga Office | Brampton |
| VOICE for Children who are Deaf and Hard of Hearing, Halton/Hamilton/Niagara/Peel Chapter | Oakville |
| Workplace Safety and Insurance Board, Toronto Office, Programs and Investigations | Toronto |
| YMCA of Oakville | Oakville |
| Youth Alliance for Intersectional Justice, Burlington, Social, Advocacy and Education Services for Black Neurovaried Youth | Burlington |
