| C.A.S., - Regional Mun. of Waterloo | Other Public Sector Employers | 2000 | 1 | $100,349 |
| C.A.S.- City of Guelph & Welling. Cnty | Other Public Sector Employers | 2001 | 1 | $100,294 |
| C.A.S.- London & Middlesex | Other Public Sector Employers | 2001 | 2 | $116,627 |
| C.A.S.- Niagara Region | Other Public Sector Employers | 2001 | 1 | $123,235 |
| C.A.S.- Reg. Municipality of Waterloo | Other Public Sector Employers | 2001 | 2 | $108,705 |
| C.M. Hincks Treatment Centre | Other Public Sector Employers | 1997 | 3 | $124,685 |
| C.S.C.E. | Other Public Sector Employers | 2002 | 3 | $119,093 |
| C.S.D.C.S.O. | School Boards | 2002 | 5 | $113,985 |
| C.U.P.R. | Municipalities & Services | 2002 | 1 | $105,536 |
| Cabinet Office | Government of Ontario – Ministries | 2025 | 338 | $143,226 |
| Caledon Community Services | Other Public Sector Employers | 2025 | 5 | $146,742 |
| Caledon Meals on Wheels | Other Public Sector Employers | 2025 | 1 | $110,370 |
| Caledon-Dufferin Victim Services | Other Public Sector Employers | 2024 | 1 | $103,790 |
| CAMA Woodlands Nursing Home | Other Public Sector Employers | 2014 | 1 | $115,563 |
| Cambrian | Colleges | 1997 | 1 | $115,811 |
| Cambrian College of Applied Arts & Technology | Colleges | 1996 | 1 | $111,655 |
| Cambrian College of Applied Arts and Technology | Colleges | 2025 | 234 | $131,324 |
| Cambridge Memorial Hospital | Hospitals & Boards of Public Health | 2025 | 373 | $130,119 |
| Camino Wellbeing + Mental Health | Other Public Sector Employers | 2025 | 7 | $132,049 |
| Campbell Children's School Authority | School Boards | 2018 | 1 | $104,334 |
| Campbell Children’s Centre School Authority | School Boards | 2022 | 2 | $101,686 |
| Campbellford | Hospitals & Boards of Public Health | 2001 | 1 | $105,638 |
| Campbellford Memorial | Hospitals & Boards of Public Health | 2002 | 1 | $110,200 |
| Campbellford Memorial Hospital | Hospitals & Boards of Public Health | 2025 | 60 | $126,492 |
| Can Mental Hlth. Assoc. - Metro Toronto | Other Public Sector Employers | 2004 | 2 | $110,423 |
| Can Mental Hlth. Assoc. - Windsor Essex | Other Public Sector Employers | 2004 | 2 | $112,828 |
| Can-Am Indian Friendship Centre of Windsor Inc | Other Public Sector Employers | 2024 | 1 | $101,103 |
| Can. Inst. for Adv. Research, the | Other Public Sector Employers | 2002 | 4 | $161,067 |
| Can. Mental Hlth. Assoc. - Ottawa | Other Public Sector Employers | 2004 | 1 | $135,004 |
| Canada Safety Council | Other Public Sector Employers | 2025 | 1 | $177,181 |
| Canada’s Walk of Fame | Other Public Sector Employers | 2024 | 3 | $194,038 |
| Canadian Academy of Recording Arts and Sciences (Caras) | Other Public Sector Employers | 2025 | 8 | $167,004 |
| Canadian Addiction Counsellors Certification Federation / Federation Canadienne d’Agrement des Conseillers En Toxicomanie | Other Public Sector Employers | 2021 | 1 | $163,165 |
| Canadian AIDS Treatment Information Exchange | Other Public Sector Employers | 2025 | 7 | $117,159 |
| Canadian Alliance to End Homelessness | Other Public Sector Employers | 2024 | 6 | $155,662 |
| Canadian Association of Wound Care | Other Public Sector Employers | 2022 | 1 | $120,000 |
| Canadian Blood Agency | Other Public Sector Employers | 2025 | 1 | $136,743 |
| Canadian Blood Services | Other Public Sector Employers | 2010 | 201 | $137,877 |
| Canadian Canoe Museum | Other Public Sector Employers | 2023 | 1 | $130,000 |
| Canadian Centre for Aging and Brain Health Innovation Development Inc. | Other Public Sector Employers | 2022 | 4 | $157,788 |
| Canadian Centre for Diversity | Other Public Sector Employers | 2012 | 1 | $125,000 |
| Canadian Centre for Refugee and Immigrant Health Care | Other Public Sector Employers | 2025 | 1 | $134,078 |
| Canadian Centre for Victims of Torture | Other Public Sector Employers | 2025 | 1 | $132,459 |
| Canadian Council for Aboriginal Business | Other Public Sector Employers | 2016 | 1 | $150,000 |
| Canadian Council of Muslim Women | Other Public Sector Employers | 2025 | 2 | $184,183 |
| Canadian Council on Rehabilitation & Work | Other Public Sector Employers | 2012 | 2 | $127,737 |
| Canadian Cyber Threat Exchange (CCTX) | Other Public Sector Employers | 2025 | 4 | $134,690 |
| Canadian Deafblind Association Ontario Chapter | Other Public Sector Employers | 2020 | 2 | $144,511 |
| Canadian Education Association | Other Public Sector Employers | 2024 | 2 | $107,989 |
| Canadian Elevator Industry Educational Program | Other Public Sector Employers | 2015 | 1 | $118,339 |
| Canadian Elevator Industry Educational Program (CEIEP) | Other Public Sector Employers | 2025 | 3 | $181,556 |
| Canadian Energy Efficiency Alliance | Other Public Sector Employers | 2011 | 4 | $163,435 |
| Canadian Film Centre | Other Public Sector Employers | 2024 | 4 | $168,188 |
| Canadian Film in the Schools (Reel Canada) | Other Public Sector Employers | 2016 | 2 | $118,065 |
| Canadian Foundation for Children Youth and the Law Inc (O/A Justice for Children and Youth) | Other Public Sector Employers | 2021 | 3 | $125,366 |
| Canadian Foundation for Economic Education | Other Public Sector Employers | 2023 | 1 | $222,252 |
| Canadian Hearing Society | Other Public Sector Employers | 2025 | 20 | $146,476 |
| Canadian Hearing Society, the | Other Public Sector Employers | 2001 | 1 | $137,958 |
| Canadian Helen Keller Centre (CHKC) | Other Public Sector Employers | 2025 | 1 | $146,304 |
| Canadian Independent Music Association | Other Public Sector Employers | 2010 | 1 | $118,058 |
| Canadian Inst. for Advanced Researc | Other Public Sector Employers | 1999 | 2 | $148,450 |
| Canadian Institute for Advance Research | Other Public Sector Employers | 1996 | 1 | $114,950 |
| Canadian Institute for Advanced Research | Other Public Sector Employers | 2019 | 14 | $200,136 |
| Canadian Institute for Advancements in Mental Health | Other Public Sector Employers | 2025 | 3 | $108,550 |
| Canadian Institute for Health Info | Other Public Sector Employers | 2025 | 391 | $126,459 |
| Canadian International Military Games Corporation | Other Public Sector Employers | 2017 | 6 | $230,415 |
| Canadian Live Music Association | Other Public Sector Employers | 2021 | 1 | $160,000 |
| Canadian Marine Careers Foundation | Other Public Sector Employers | 2025 | 1 | $167,909 |
| Canadian Men's Health Foundation | Other Public Sector Employers | 2018 | 1 | $148,283 |
| Canadian Mental Health Association (Thunder Bay) | Other Public Sector Employers | 2025 | 4 | $120,325 |
| Canadian Mental Health Association - Barrie-Simcoe | Other Public Sector Employers | 2007 | 2 | $157,695 |
| Canadian Mental Health Association - Champlain Eas | Other Public Sector Employers | 2015 | 1 | $109,951 |
| Canadian Mental Health Association - Elgin Branch | Other Public Sector Employers | 2019 | 1 | $106,893 |
| Canadian Mental Health Association - Grey Bruce Branch | Other Public Sector Employers | 2017 | 1 | $105,131 |
| Canadian Mental Health Association - Huron-Perth Branch | Other Public Sector Employers | 2021 | 1 | $113,734 |
| Canadian Mental Health Association - Ontario | Other Public Sector Employers | 2003 | 1 | $115,587 |
| Canadian Mental Health Association - Peel Dufferin | Other Public Sector Employers | 2016 | 3 | $134,494 |
| Canadian Mental Health Association - Sudbury / Manatoulin / Association canadienne pour la santé mentale - Sudbury/Manitoulin | Other Public Sector Employers | 2016 | 1 | $126,636 |
| Canadian Mental Health Association - Waterloo Region | Other Public Sector Employers | 2006 | 1 | $139,113 |
| Canadian Mental Health Association - Windsor - Essex | Other Public Sector Employers | 2003 | 1 | $107,040 |
| Canadian Mental Health Association - Windsor Essex County | Other Public Sector Employers | 2007 | 4 | $150,084 |
| Canadian Mental Health Association Algoma | Other Public Sector Employers | 2025 | 2 | $146,991 |
| Canadian Mental Health Association Brant-Haldimand-Norfolk Branch | Other Public Sector Employers | 2025 | 1 | $160,000 |
| Canadian Mental Health Association Grey Bruce | Other Public Sector Employers | 2025 | 4 | $123,284 |
| Canadian Mental Health Association Haliburton Kawartha Pine Ridge Branch | Other Public Sector Employers | 2025 | 5 | $121,920 |
| Canadian Mental Health Association Hastings Prince Edward Addictions and Mental Health Services | Other Public Sector Employers | 2025 | 10 | $124,706 |
| Canadian Mental Health Association Kenora Branch | Other Public Sector Employers | 2025 | 1 | $171,944 |
| Canadian Mental Health Association Lambton Kent Branch | Other Public Sector Employers | 2025 | 11 | $129,313 |
| Canadian Mental Health Association Metropolitan Toronto | Other Public Sector Employers | 2003 | 1 | $114,683 |
| Canadian Mental Health Association Middlesex | Other Public Sector Employers | 2020 | 1 | $175,360 |
| Canadian Mental Health Association Ottawa-Carleton Branch | Other Public Sector Employers | 2025 | 15 | $132,166 |
| Canadian Mental Health Association Oxford County Branch | Other Public Sector Employers | 2020 | 1 | $117,851 |
| Canadian Mental Health Association Toronto Branch | Other Public Sector Employers | 2025 | 16 | $144,694 |
| Canadian Mental Health Association Waterloo Wellington Branch | Other Public Sector Employers | 2025 | 23 | $127,191 |
| Canadian Mental Health Association – Champlain East | Other Public Sector Employers | 2025 | 1 | $145,664 |
| Canadian Mental Health Association – Cochrane Timiskaming Branch | Other Public Sector Employers | 2025 | 12 | $122,536 |
| Canadian Mental Health Association – Durham | Other Public Sector Employers | 2025 | 11 | $130,839 |
| Canadian Mental Health Association – Halton Branch | Other Public Sector Employers | 2025 | 5 | $130,097 |
| Canadian Mental Health Association – Muskoka-Parry Sound Branch | Other Public Sector Employers | 2025 | 11 | $125,902 |
| Canadian Mental Health Association – Niagara Branch | Other Public Sector Employers | 2025 | 5 | $113,715 |