| Centre for Commercialization of Regenerative Medicine | Other Public Sector Employers | 2015 | 4 | $165,352 |
| Centre for Effective Practice | Other Public Sector Employers | 2025 | 8 | $146,161 |
| Centre for Equitable Library Access | Other Public Sector Employers | 2025 | 2 | $115,990 |
| Centre for Family Medicine Family Health Team | Other Public Sector Employers | 2024 | 6 | $115,541 |
| Centre for Governance Innovation | Other Public Sector Employers | 2005 | 1 | $128,726 |
| Centre for Independent Living in Toronto | Other Public Sector Employers | 2015 | 1 | $100,889 |
| Centre for Independent Living in Toronto (CILT) Inc | Other Public Sector Employers | 2025 | 2 | $133,139 |
| Centre for International Governance Innovation | Other Public Sector Employers | 2019 | 16 | $181,812 |
| Centre for Research & Innovation in the Bio-Economy | Other Public Sector Employers | 2011 | 1 | $158,782 |
| Centre for Research and Innovation in the Bio-Economy | Other Public Sector Employers | 2025 | 3 | $129,808 |
| Centre for Research, Earth & Space Tech. | Other Public Sector Employers | 2003 | 5 | $112,656 |
| Centre for Resilience and Social Development (Crsd) (O/A Canadian Friends of Somalia) | Other Public Sector Employers | 2025 | 2 | $113,160 |
| Centre for Skills Development & Training | Other Public Sector Employers | 2015 | 1 | $112,662 |
| Centre for Social Innovation | Other Public Sector Employers | 2018 | 3 | $136,804 |
| Centre for Spanish Speaking Peoples | Other Public Sector Employers | 2025 | 2 | $122,611 |
| Centre for Surgical Invention and Innovation | Other Public Sector Employers | 2025 | 3 | $165,910 |
| Centre for the Evaluation of Health Professionals Educated Abroad | Other Public Sector Employers | 2013 | 3 | $161,819 |
| Centre franco-ontarien de ress. péd. | Other Public Sector Employers | 2005 | 2 | $134,006 |
| Centre Franco-Ontarien de Ressources Pedagogiques | Other Public Sector Employers | 2025 | 31 | $130,603 |
| Centre Franco-Ontarien des Ressources En Alphabetisation (Sudbury) Inc | Other Public Sector Employers | 2023 | 1 | $111,498 |
| Centre Franco-Ontarien des Ressources Pédagogiques | Other Public Sector Employers | 2016 | 2 | $183,238 |
| Centre francophone - Toronto | Other Public Sector Employers | 2005 | 3 | $116,291 |
| Centre Francophone d'Aide et de Lutte Contre les Agressions a Caractere Sexuel d'Ottawa | Other Public Sector Employers | 2025 | 2 | $116,184 |
| Centre Francophone de Toronto | Other Public Sector Employers | 2025 | 13 | $160,415 |
| Centre in the Square Inc | Other Public Sector Employers | 2023 | 5 | $120,398 |
| Centre Medical Ste-Anne Inc. | Other Public Sector Employers | 1996 | 1 | $121,413 |
| Centre Moi j'apprends Inc. | Other Public Sector Employers | 2010 | 1 | $103,740 |
| Centre m�dico social communautaire | Other Public Sector Employers | 2003 | 1 | $112,606 |
| Centre m�dico-social comm. | Other Public Sector Employers | 1998 | 1 | $118,419 |
| Centre m�dics social comm. | Other Public Sector Employers | 1999 | 1 | $109,684 |
| Centre Ontarien de Prevention des Agressions (COPA) | Other Public Sector Employers | 2021 | 1 | $107,250 |
| Centre Psychosocial | Other Public Sector Employers | 2023 | 5 | $116,326 |
| Centre psychosocial - Ottawa | Other Public Sector Employers | 2005 | 1 | $107,953 |
| Centre Psychosocial pour Enfants et Familles d'Ottawa | Other Public Sector Employers | 2007 | 2 | $102,348 |
| Centre Youville Centre Ottawa-Carleton Inc | Other Public Sector Employers | 2025 | 2 | $105,509 |
| Centre-in-the-Square Corporation | Municipalities & Services | 2007 | 3 | $125,333 |
| Centretown CHC | Other Public Sector Employers | 2004 | 1 | $108,969 |
| Centretown Citizens Ottawa Corp | Other Public Sector Employers | 2023 | 5 | $111,785 |
| Centretown Community Health Centre | Other Public Sector Employers | 2025 | 19 | $161,094 |
| Centretown Community Health Ctr. | Other Public Sector Employers | 1999 | 2 | $111,632 |
| Centretown Community Health Ctrs. | Hospitals & Boards of Public Health | 2002 | 1 | $123,119 |
| CEP de l'Est de l'Ont. | School Boards | 2001 | 2 | $113,158 |
| Cerebral Palsy Parent Council of Toronto | Other Public Sector Employers | 2025 | 1 | $112,350 |
| Cerebral Palsy Parent Council of Toronto, o / a Participation House, Markham | Other Public Sector Employers | 2014 | 1 | $106,170 |
| Cerebral Palsy Parent Council of Toronto, o/a Participation House, Markham | Other Public Sector Employers | 2016 | 1 | $101,815 |
| CESC de Dubreuilville | School Boards | 2005 | 1 | $101,955 |
| Champlain Community Care Access Centre | Other Public Sector Employers | 2016 | 34 | $122,876 |
| Champlain Health Supply Services | Other Public Sector Employers | 2018 | 1 | $103,852 |
| Change Foundation | Other Public Sector Employers | 2010 | 15 | $130,416 |
| Changing Ways (London) Inc | Other Public Sector Employers | 2025 | 1 | $100,714 |
| Chapleau and District Family Health Team | Other Public Sector Employers | 2020 | 1 | $102,551 |
| Chapleau Health Services | Hospitals & Boards of Public Health | 2007 | 1 | $129,426 |
| Charity House (Windsor) | Other Public Sector Employers | 2024 | 1 | $133,088 |
| Charity House (Windsor) O/A Brentwood Recovery Home | Other Public Sector Employers | 2011 | 1 | $101,790 |
| Charles H Best Diabetes Centre | Other Public Sector Employers | 2024 | 5 | $139,243 |
| Chatham Kent Family Health Team | Other Public Sector Employers | 2023 | 5 | $121,239 |
| Chatham-Kent Community Health Centres | Other Public Sector Employers | 2025 | 22 | $173,516 |
| Chatham-Kent Health Alliance | Hospitals & Boards of Public Health | 2025 | 420 | $124,569 |
| Chatham-Kent Health Unit | Hospitals & Boards of Public Health | 2003 | 2 | $130,956 |
| Chatham-Kent Integ. Child. Services | Other Public Sector Employers | 2003 | 1 | $111,532 |
| Chatham-Kent Integ. Child. Srvcs | Other Public Sector Employers | 2001 | 1 | $102,083 |
| Chatham-Kent Integ. Children's Srvcs. | Other Public Sector Employers | 2004 | 1 | $121,936 |
| Chatham/Kent and Sarnia-Lambton CCACs | Other Public Sector Employers | 2006 | 2 | $132,612 |
| Chatham–Kent Community Health Centres | Other Public Sector Employers | 2012 | 3 | $202,191 |
| CHATS | Other Public Sector Employers | 2005 | 1 | $128,000 |
| CHATS - Community & Home Assistance to Seniors | Other Public Sector Employers | 2015 | 1 | $154,999 |
| Cheshire Homes | Other Public Sector Employers | 2023 | 2 | $116,957 |
| Cheshire Homes of London Inc | Other Public Sector Employers | 2025 | 5 | $119,923 |
| Cheshire Supports to Independent Living Inc. | Other Public Sector Employers | 2025 | 3 | $117,783 |
| Chiefs of Ontario | Other Public Sector Employers | 2022 | 2 | $106,599 |
| Child & Community Resources / Resources pour l'enfance et la communauté | Other Public Sector Employers | 2013 | 5 | $115,251 |
| Child & Community Resources / Ressources pour l'enfance et la communauté | Other Public Sector Employers | 2012 | 3 | $119,692 |
| Child & Family Centre | Other Public Sector Employers | 2013 | 2 | $128,611 |
| Child & Family Counselling Centre of Elgin | Other Public Sector Employers | 2008 | 1 | $124,357 |
| Child & Family Services of Timmins & District | Other Public Sector Employers | 2011 | 3 | $125,081 |
| Child & Family Services Review Board | Crown Agencies | 2012 | 3 | $132,306 |
| Child & Family Services Review Board/Custody Review Board | Crown Agencies | 2015 | 3 | $131,850 |
| Child & Family Services Review Board/Custody Review Board / Commission de révision des services à l'enfance et à la famille / Commission de révision des placements sous garde | Crown Agencies | 2011 | 3 | $136,731 |
| Child & Family Srvcs. - Timmins & Dist. | Other Public Sector Employers | 2005 | 4 | $109,203 |
| Child & Family Srvcs. Review Bd./Custody Review Bd. | Crown Agencies | 2010 | 2 | $145,117 |
| Child & Youth Wellness Centre of Leeds & Grenville | Other Public Sector Employers | 2009 | 1 | $108,261 |
| Child and Community Resources | Other Public Sector Employers | 2025 | 5 | $128,407 |
| Child and Family Centre Ngodweaangizwin Aaskaagewin | Other Public Sector Employers | 2018 | 6 | $116,726 |
| Child and Family Centre, Centre de l'Enfant et la Famille Ngodweaangizwin Aaskaagewin | Other Public Sector Employers | 2017 | 5 | $111,685 |
| Child and Family Services of Grand Erie | Other Public Sector Employers | 2025 | 50 | $127,695 |
| Child and Family Services Review Board / Custody Review Board | Crown Agencies | 2016 | 1 | $167,076 |
| Child and Family Services Review Board/Custody Review Board | Crown Agencies | 2023 | 2 | $135,972 |
| Child Care Resources | Other Public Sector Employers | 2010 | 2 | $122,479 |
| Child Care Resources / Ressources sur la Garde d'Enfants | Other Public Sector Employers | 2011 | 3 | $115,964 |
| Child Care Resources/Ressources sur la garde d'enfants | Other Public Sector Employers | 2007 | 1 | $102,117 |
| Child Development Institute | Other Public Sector Employers | 2025 | 16 | $127,607 |
| Child Development Resource Connection Peel | Other Public Sector Employers | 2025 | 2 | $127,172 |
| Child Witness Centre of Waterloo Region | Other Public Sector Employers | 2025 | 1 | $122,500 |
| Children & Family Srvcs, York Reg. | Other Public Sector Employers | 2002 | 1 | $131,096 |
| Children & Family Srvcs-York Region | Other Public Sector Employers | 2000 | 1 | $111,584 |
| Children & Family Srvcs. of York Region | Other Public Sector Employers | 2004 | 2 | $126,129 |
| Children and Family Services for York Region | Other Public Sector Employers | 2025 | 70 | $121,588 |
| Children and Youth Services | Government of Ontario – Ministries | 2018 | 367 | $118,551 |
| Children First in Essex County | Other Public Sector Employers | 2025 | 4 | $135,287 |
| Children s Hosp. of East. Ontario | Hospitals & Boards of Public Health | 1999 | 11 | $143,285 |