| Achēv, Accelerating Career Advancement Program | Mississauga |
| Ad Standards | Toronto |
| Alcohol and Gaming Commission of Ontario, Head Office | Toronto |
| Assessment Review Board | Toronto |
| Automobile Protection Association | Toronto |
| Bereavement Authority of Ontario | Toronto |
| Better Business Bureau Central Ontario | Kitchener |
| Burlington. Building and By-Law Services, Licensing Services | Burlington |
| Burlington. City Hall, Burlington City Hall, Applications, Licences and Permits | Burlington |
| Burlington. Finance Department, Assessment & Taxation Section | Burlington |
| Burlington. Finance Department, Property Tax Rebate / Deferral | Burlington |
| Burlington. Fire Department, Public Fire Inspections & Fire Safety Education Programs | Burlington |
| Burlington. Office of the City Clerk | Burlington |
| Burlington. Office of the City Clerk, Burlington Accessibility Advisory Committee | Burlington |
| Burlington. Roads, Parks and Forestry, Parking Services | Burlington |
| Canada Post, Online Service, Find a Post Office | Ontario |
| Canada Post Corporation, Acton Post Office, Postal Services | Acton |
| Canada Post Corporation, Georgetown Post Office, Postal Services | Georgetown |
| Canada Post Corporation, Burlington Post Office, Postal Services | Burlington |
| Canada Post Corporation, Milton Post Office, Postal Services | Milton |
| Canada Post Corporation, Campbellville Post Office, Postal Services | Milton |
| Canada Post Corporation, Oakville - Lakeshore West Post Office, Postal Services | Oakville |
| Canada. Bank of Canada, Unclaimed Properties Office | Ottawa (City of) |
| Canada. Border Services Agency, NEXUS Program | Niagara Falls |
| Canada. Canada Revenue Agency, Tax Information | Canada |
| Canada. Canada Revenue Agency, Charities Directorate | Ottawa |
| Canada. Canada Revenue Agency, Sir Isaac Brock Building, Hamilton Tax Services | Hamilton |
| Canada. Canada Revenue Agency, Toronto Region, Canada Child Benefit | Toronto |
| Canada. Canada Revenue Agency, Toronto Region | Toronto |
| Canada. Canadian Food Inspection Agency, Ontario Area Office | Guelph |
| Canada. Canadian Intellectual Property Office, Patents | Gatineau |
| Canada. Canadian Radio-television and Telecommunications Commission | Gatineau |
| Canada. Canadian Radio-television and Telecommunications Commission, Spam Reporting Centre | Ottawa |
| Canada. Competition Bureau, Information Centre | Gatineau |
| Canada. Crown-Indigenous Relations and Northern Affairs and Indigenous Services, Allegations and Complaints | Gatineau |
| Canada. Financial Consumer Agency of Canada, Ottawa, Cashing a Government of Canada Cheque | Ottawa |
| Canada. Health Canada, Cannabis in Canada | Ottawa |
| Canada. Immigration, Refugees and Citizenship Canada, Passport Office, Brampton Branch | Brampton |
| Canada. Immigration, Refugees and Citizenship Canada, Hamilton Citizenship Office, Citizenship Certificate | Hamilton |
| Canada. Immigration, Refugees and Citizenship Canada, Passport Office, Mississauga Branch | Mississauga |
| Canada. Indigenous Services Canada, Ontario Regional Office | Toronto |
| Canada. Innovation, Science and Economic Development Canada, Gatineau, Canadian Intellectual Property Office | Gatineau |
| Canada. Innovation, Science and Economic Development Canada, Canadian Consumer Handbook | Ottawa |
| Canada. Innovation, Science and Economic Development Canada, Corporations Canada - Business Incorporation | Ottawa |
| Canada. Innovation, Science and Economic Development Canada, Spectrum and Telecommunications Sector - Amateur Radio Service Centre | Sault Ste. Marie |
| Canada. Innovation, Science and Economic Development, Ontario Region, Office of the Superintendent of Bankruptcy, Ontario Region | Toronto |
| Canada. Office of the Federal Ombudsperson for Victims of Crime | Ottawa |
| Canada. Office of the Information Commissioner of Canada | Ottawa |
| Canada. Office of the Privacy Commissioner of Canada, Ottawa | Ottawa |
| Canada. Royal Canadian Mounted Police, Canadian Firearms Program | Ottawa |
| Canada. Social Insurance Numbers | Toronto |
| Canada. Transport Canada, Pleasure Craft Licensing and Proof of Competency | Halton Region |
| Canada. Transport Canada, Pleasure Craft Licensing Centre | Ottawa |
| Canada. Veterans Affairs Canada [Toronto area], Veterans Ombudsman | Toronto |
| Canada. Veterans Review and Appeal Board, Charlottetown | Charlottetown |
| Canadian Association of the Deaf, Ottawa | Ottawa |
| Canadian Automobile Association, South Central Ontario - Burlington Office | Burlington |
| Canadian Federation of Students | Ottawa |
| Canadian Human Rights Commission | Ottawa |
| Canadian Marketing Association | Toronto |
| Canadian Motor Vehicle Arbitration Plan | Toronto Downtown |
| Canadian Power and Sail Squadrons, Niagara District - Burlington Power and Sail Squadron | Burlington |
| Canadian Power and Sail Squadrons, York West District - Oakville Power and Sail Squadron | Oakville |
| Canadian Therapeutic Riding Association | Guelph |
| Canadian Ukrainian Immigrant Aid Society, Main Office | Toronto |
| Chinese Association of Mississauga | Mississauga |
| Civilian Review and Complaints Commission for the RCMP | Ottawa |
| College of Audiologists and Speech Language Pathologists of Ontario | Toronto Downtown North |
| College of Chiropractors of Ontario | Toronto Downtown Central |
| College of Denturists of Ontario | Toronto Downtown Central |
| College of Dietitians of Ontario | Toronto |
| College of Early Childhood Educators | Toronto |
| College of Homeopaths of Ontario | Toronto Downtown Central |
| College of Immigration and Citizenship Consultants | Burlington |
| College of Massage Therapists of Ontario | Toronto Downtown North |
| College of Naturopaths of Ontario (The) | Toronto Downtown Central |
| College of Nurses of Ontario | Toronto Downtown North |
| College of Occupational Therapists of Ontario | Toronto Downtown Central |
| College of Opticians of Ontario | Toronto Downtown Central |
| College of Physicians and Surgeons of Ontario | Toronto Downtown Central |
| College of Physiotherapists of Ontario | Toronto Downtown Central |
| College of Psychologists of Ontario (The) | Toronto Downtown North |
| College of Registered Psychotherapists of Ontario | Toronto Downtown |
| College of Traditional Chinese Medicine Practitioners and Acupuncturists of Ontario | Markham |
| College of Veterinarians of Ontario | Guelph |
| Commission for Complaints for Telecom-television Services | Ottawa |
| Consolidated Credit Counselling Services of Canada | Toronto |
| Credit Canada, Oakville Office | Oakville |
| Credit Canada Debt Solutions, Credit Canada Debt Solutions, Head Office / North York Office | Toronto |
| Credit Counselling Society, Credit Counselling Society Debt Help | Hamilton |
| Credit Counselling Society, Mississauga | Mississauga |
| Credit Counselling Society, Toronto | Toronto |
| Dar Foundation | Oakville |
| Dare to be Youth Charity | Burlington |
| DriveTest Centre, Burlington, Driver Examination Centre | Burlington |
| DriveTest Centre, Oakville, Driver Examination Centre | Oakville |
| DriveTest Centre, Guelph | Guelph |
| Electrical Safety Authority | Cambridge |
| Equifax Canada Inc | Québec |
| Federation of Rental Housing Providers of Ontario, Yonge Street Office, Rental Housing Provider Support | Toronto |
| Financial Services Regulatory Authority of Ontario | Toronto |
| Halton Hills. Corporate Services | Georgetown |
| Halton Hills. Finance Department, Property Tax Information | Halton Hills |
| Halton Hills. Fire Department, Inspections and Permits | Halton Hills |
| Halton Hills. Town Council, Clerks Division Services | Halton Hills |
| Halton Hills. Transportation and Public Works, Parking | Halton Hills |
| Halton Regional Police Service, Police Records Checks | Oakville |
| Halton Regional Police Service, Public Complaints Process | Halton Region |
| Halton. Halton Region Public Health, Food Safety | Oakville |
| Halton. Halton Region Public Health, Immunization Services | Oakville |
| Halton. Small Business Centre, Small Business Enterprise Centre | Oakville |
| HSR Public Transit, HSR Customer Centre Services | Hamilton |
| Income Tax Clinics, Burlington | Burlington |
| Income Tax Clinics, Halton Hills | Halton Hills |
| Income Tax Clinics, Milton | Milton |
| Income Tax Clinics, Oakville | Oakville |
| Information and Privacy Commissioner of Ontario | Toronto |
| Insurance Bureau of Canada, Ontario Head Office, Consumer Information Centre | Toronto |
| International Credential Assessment Service of Canada | Guelph |
| Kerr Street Mission, Community Social Services | Oakville |
| Law Enforcement Complaints Agency | Toronto |
| Law Society of Ontario | Toronto |
| Links2Care, Acton Community Hub, Care at Home for Seniors and Adults with Disabilities | Acton |
| Links2Care, Care In The Community - Community Volunteer Income Tax Program | Halton Hills |
| Links2Care, Georgetown Community Hub, Care at Home for Seniors and Adults with Disabilities | Halton Hills |
| Lost Wallet, Burlington | Burlington |
| Lost Wallet, Oakville | Oakville |
| Milton. Community Services, Special Events | Milton |
| Milton. Corporate Services, Parking | Milton |
| Milton. Corporate Services, Property Tax Information | Milton |
| Milton. Engineering Services | Milton |
| Milton. Fire and Rescue Services, Community Education Programs | Milton |
| Milton. Legislative and Legal Services Division, Freedom Of Information | Milton |
| Milton. Town Clerk's Division, Accessibility | Milton |
| Milton. Town Clerk's Division, Licensing and Permit Services | Milton |
| Milton. Town Clerk's Division, Vital Statistics | Milton |
| Municipal Property Assessment Corporation, Online Service, Find a Municipal Property Assessment Corporation Office | |
| National NewsMedia Council | Toronto |
| Oak Park Neighbourhood Centre, Low Income Supports | Oakville |
| Oak Park Neighbourhood Centre, Year Round Low Income Tax Clinic | Oakville |
| Oakville. Clerks Department | Oakville |
| Oakville. Clerks Department, Marriage, Lottery, and Liquor Licences | Oakville |
| Oakville. Fire Department, Fire Prevention Programs | Oakville |
| Oakville. Municipal Enforcement Services, Parking Operations | Oakville |
| Oakville. Municipal Enforcement Services, Business Licensing | Oakville |
| Oakville. Recreation and Culture, Special Events Service | Oakville |
| Oakville. ServiceOakville, Property Tax Payments | Oakville |
| Office of the Hydro One Ombudsman, Hydro One Services Complaints | Toronto |
| Office of the Taxpayers' Ombudsperson | Ottawa |
| OmbudService for Life and Health Insurance, Online Services | Toronto |
| Ombudsman for Banking Services and Investments | Toronto |
| Ombudsman Ontario, Children and Youth Unit | Toronto |
| Ombudsman Ontario | Toronto |
| Ontario College Application Service | Guelph |
| Ontario College of Pharmacists | Toronto Downtown North |
| Ontario College of Social Workers and Social Service Workers | Toronto Downtown North |
| Ontario College of Teachers | Toronto |
| Ontario Energy Board, Consumer Relations | Toronto |
| Ontario Human Rights Commission | Toronto |
| Ontario Judicial Council, Toronto - Mailing Address | Toronto |
| Ontario Ministry of Municipal Affairs and Housing, Landlord and Tenant Board Southern Office, Ontario Landlord and Tenant Board | Hamilton |
| Ontario Motor Vehicle Industry Council | Toronto |
| Ontario Public Holidays and Retail Business Holidays | Ontario |
| Ontario Securities Commission, GetSmarterAboutMoney.ca | Toronto |
| Ontario Securities Commission | Toronto |
| Ontario. Ministry for Seniors and Accessibility | Toronto |
| Ontario. Ministry of Children, Community and Social Services, Mississauga - Central Region | Mississauga |
| Ontario. Ministry of Education | Toronto |
| Ontario. Ministry of Environment, Conservation and Parks, Peterborough - Mailing Address, Natural Resources Information and Support Centre | Peterborough |
| Ontario. Ministry of Finance, Objections and Tax Appeals | Oshawa |
| Ontario. Ministry of Finance, Oshawa, Guaranteed Annual Income System and Ontario Child Care Supplement | Oshawa |
| Ontario. Ministry of Government and Consumer Services. Consumer Protection Ontario | Toronto |
| Ontario. Ministry of Health, Public Health Care | Toronto Downtown Central |
| Ontario. Ministry of Labour, Immigration, Training and Skills Development. Employment Practices Branch, Central Region West, Mississauga | Mississauga |
| Ontario. Ministry of Labour, Immigration, Training and Skills Development. Employment Practices Branch, Main Office | Toronto |
| Ontario. Ministry of Long-Term Care, Long-Term Care Family Support and Action Line | Toronto Downtown Central |
| Ontario. Ministry of Municipal Affairs and Housing. Rental Housing Enforcement Unit | Toronto |
| Ontario. Ministry of the Attorney General, Hamilton Services, Family Court - Litigation Department | Hamilton |
| Ontario. Ministry of the Attorney General, Hamilton Services, Office of the Public Guardian and Trustee | Hamilton |
| Ontario. Ministry of the Attorney General. Office of the Public Guardian and Trustee | Toronto |
| Ontario. Ministry of the Environment, Conservation and Parks, Ontario Parks | Peterborough |
| Ontario. Ministry of Transportation, Tow Zone Pilot Program | Ontario |
| Patient Ombudsman | Toronto Downtown Central |
| Psychiatric Patient Advocate Office, Toronto Office | Toronto |
| Real Estate Council of Ontario | Toronto |
| Registered Massage Therapists' Association of Ontario | Etobicoke |
| Retirement Homes Regulatory Authority | Toronto Downtown Central |
| Roots Community Services | Brampton |
| Royal College of Dental Surgeons of Ontario | Toronto Downtown North |
| Salvation Army (The), Oakville, Community and Family Services | Oakville |
| Service Canada, Guelph, Service Canada Centre | Guelph |
| Service Canada, Social Insurance Registration Office | Bathurst |
| Service Canada, Office for Client Satisfaction (The) | Ottawa |
| Service Canada, Service Canada, Mississauga Service Canada Centre | Mississauga |
| Service Canada, Passport Canada | Ottawa |
| Service Canada - Halton Region, Oakville, Federal Government Services | Oakville |
| Service Canada - Halton Region, Burlington, Federal Government Services | Burlington |
| Service Canada - Halton Region, Georgetown, Federal Government Services | Georgetown |
| Service Canada - Halton Region, Milton, Federal Government Services | Milton |
| Service Canada Hamilton Locations, Flamborough Municipal Service Centre, Canadian Passport Service | Flamborough |
| Service Canada Hamilton Locations, Hamilton Mountain Service Canada Centre and Passport Services, Canadian Passport Service | Hamilton |
| ServiceOntario, ServiceOntario, Brampton North Service Counter | Brampton |
| ServiceOntario, ServiceOntario, Brampton South Service Counter | Brampton |
| ServiceOntario, ServiceOntario, Mississauga - Dundas St W Service Counter | Mississauga |
| ServiceOntario, Accessible Parking Permit | Toronto |
| ServiceOntario, Office of the Registrar General | Toronto |
| ServiceOntario | Toronto |
| ServiceOntario, Silvercreek and Highway 6 (Guelph), Provincial Government Services | Guelph |
| ServiceOntario, Stone Road and Gordon (Guelph), Provincial Government Services | Guelph |
| ServiceOntario - Halton Region, Burlington - West Service Counter, Provincial Government Services | Burlington |
| ServiceOntario - Halton Region, Burlington - East Service Counter, Provincial Government Services | Burlington |
| ServiceOntario - Halton Region, Georgetown Service Counter, Provincial Government Services | Georgetown |
| ServiceOntario - Halton Region, Milton - Highpoint Service Counter, Provincial Government Services | Milton |
| ServiceOntario - Halton Region, Milton - Milton Mall Service Counter, Provincial Government Services | Milton |
| ServiceOntario - Halton Region, Oakville - Dorval Crossing East Service Counter, Provincial Government Services | Oakville |
| ServiceOntario - Halton Region, Oakville - Pacific Road Service Counter, Provincial Government Services | Oakville |
| ServiceOntario - Halton Region, Oakville - Staples Service Counter, Provincial Government Services | Oakville |
| ServiceOntario - Halton Region, Oakville - Trafalgar Village Service Counter, Provincial Government Services | Oakville |
| Silent Voice Canada | Toronto Downtown North |
| Special Investigations Unit | Mississauga |
| Technical Standards and Safety Authority | Toronto |
| TransUnion of Canada, Burlington, Consumer Relations | Burlington |
| Travel Industry Council of Ontario | Mississauga |
| Tribunals Ontario | Toronto |
| University of Toronto, Comparative Education Service | Toronto |
| Women's Centre of Halton (The), One-on-One Support Services | Oakville |
| World Education Services | Toronto |
