| | Record # | Organization Name(s) | Located In |
 | GCL0263 | Canadian Mental Health Association, Brant County Branch | Brantford |
 | GCL0264 | Canadian Mental Health Association, Chatham-Kent Branch | Chatham |
 | GCL0285 | Canadian Mental Health Association, Cochrane-Timiskmaming Branch | Timiskaming District |
 | GCL0284 | Canadian Mental Health Association, Cochrane-Timiskmaming Branch, Kirkland Lake | Kirkland Lake |
 | GCL0278 | Canadian Mental Health Association, Cochrane-Timiskmaming Branch, Timmins | Timmins |
 | GCL0032 | Canadian Mental Health Association, Durham | Oshawa |
 | GCL0288 | Canadian Mental Health Association, Elgin County Branch | St Thomas |
| | GCL0289 | Canadian Mental Health Association, Fort Frances Branch | Fort Frances |
 | GCL1926 | Canadian Mental Health Association, Grand River Branch, Centre for Mental Health, Guelph | Guelph |
 | GCL0429 | Canadian Mental Health Association, Grand River Branch, Centre for Mental Health, Kitchener | Kitchener |
 | GCL1927 | Canadian Mental Health Association, Grand River Branch, Centre for Mental Health, Orangeville | Orangeville |
 | GCL0290 | Canadian Mental Health Association, Grey Bruce Branch | Owen Sound |
 | GCL0292 | Canadian Mental Health Association, Haldimand-Norfolk Branch | Simcoe |
 | GCL0293 | Canadian Mental Health Association, Halton Region Branch | Milton |
 | GCL0298 | Canadian Mental Health Association, Hamilton Branch | Hamilton |
 | GCL0300 | Canadian Mental Health Association, Hastings and Prince Edward Counties Branch | Belleville |
 | GCL0305 | Canadian Mental Health Association, Huron-Perth Branch | Stratford |
 | GCL0308 | Canadian Mental Health Association, Kingston Branch | Kingston |
 | GCL0316 | Canadian Mental Health Association, Lambton Kent Branch | Sarnia |
 | GCL0317 | Canadian Mental Health Association, Leeds-Grenville Branch | Brockville |
 | GCL0323 | Canadian Mental Health Association, London-Middlesex Branch | London |
 | GCL0191 | Canadian Mental Health Association, National Office | Ottawa |
 | GCL0339 | Canadian Mental Health Association, Niagara Branch | St Catharines |
 | GCL0343 | Canadian Mental Health Association, Nipissing Regional Branch | North Bay |
 | GCL0350 | Canadian Mental Health Association, Ottawa Branch | Ottawa |
 | GCL0368 | Canadian Mental Health Association, Oxford County Branch | Woodstock |
 | GCL0372 | Canadian Mental Health Association, Peel Branch | Brampton |
 | GCL0375 | Canadian Mental Health Association, Peterborough Branch | Peterborough |
 | GCL0262 | Canadian Mental Health Association, Simcoe County Branch | Barrie |
 | GCL0381 | Canadian Mental Health Association, Thunder Bay Branch | Thunder Bay |
 | GCL0401 | Canadian Mental Health Association, Toronto Branch | Toronto |
 | GCL0425 | Canadian Mental Health Association, Victoria County Branch | Lindsay |
 | GCL2290 | Canadian Mental Health Association, Waterloo Wellington Dufferin, Administration Centre | Guelph |
 | GCL0841 | Canadian Mental Health Association, Waterloo Wellington Dufferin, Centre for Mental Health, Cambridge | Cambridge |
 | GCL2287 | Canadian Mental Health Association, Waterloo Wellington Dufferin, Mental Health and Justice Services | Cambridge |
 | GCL0435 | Canadian Mental Health Association, Windsor-Essex County Branch | Windsor |
 | GCL0441 | Canadian Mental Health Association, York Region Branch, Main Office | Newmarket |
 | GCL0629 | Grand River Hospital, Psychiatry and Mental Health, Outpatient Services | Kitchener |
 | GCL2247 | Homewood Health Centre | Guelph |
 | GCL0813 | Self Help Alliance, Self Help Alliance Cambridge, CMHA WWD | Cambridge |
 | GCL2347 | Self Help Alliance of Waterloo Wellington, Cambridge | Cambridge |
 | GCL0815 | Self Help Alliance of Waterloo Wellington, Kitchener | Kitchener |
 | GCL1535 | Trellis Mental Health and Developmental Services, Orangeville Office | Orangeville |
 | GCL1042 | Waypoint Centre for Mental Health Care | Penetanguishene |
 | GCL1857 | William Osler Health System, Brampton Civic Hospital, Child and Adolescent Inpatient Unit & Day Hospital & Psychitaric Intensive Care Unit | Brampton |
 | GCL1855 | William Osler Health System, Brampton Civic Hospital, Eating Disorders Clinic | Brampton |
 | GCL1856 | William Osler Health System, Brampton Civic Hospital, Mental Health General B | Brampton |
 | GCL1951 | William Osler Health System, Brampton Civic Hospital, Mental Health Services, Adult Day Treatment Program | Brampton |