| Canada. Border Services Agency, Border Information Service | Niagara Region |
| Canada. Canada Pension Plan | Toronto |
| Canada. Canada Revenue Agency, Tax Information | Canada |
| Canada. Elections Canada | Gatineau |
| Canada. Global Affairs Canada, Essential Information for Canadian Travellers | Ottawa |
| Canada. Health Canada, Ontario Region, First Nations and Inuit Health Branch | Ottawa |
| Canada. Indigenous Services Canada, Indian Residential Schools Settlement Agreement | Gatineau |
| Canada. Members of Parliament, Milton Electoral District, Federal Constituency Office - Adam van Koeverden | Milton |
| Canada. Members of Parliament, Burlington Electoral District, Federal Constituency Office - Karina Gould | Burlington |
| Canada. Members of Parliament, Oakville North-Burlington Electoral District, Federal Constituency Office - Pam Damoff | Halton Region |
| Canada. Members of Parliament, Oakville Electoral District, Federal Constituency Office - Anita Anand | Oakville |
| Canada. Members of Parliament, Wellington-Halton Hills - Fergus Office, Federal Constituency Office - Michael Chong | Centre Wellington |
| Canada. Office of the Prime Minister | Ottawa |
| Canada. Old Age Security Programs | Toronto |
| Canada. Parks Canada | Gatineau |
| Canada. Veterans Affairs Canada [Toronto area], Mississauga Service Centre | Mississauga |
| Service Canada, Guelph, Service Canada Centre | Guelph |
| 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 |
| Veteran Affairs Canada, Veterans Affairs Canada, Hamilton District Office | Hamilton |
