| Community Living Stratford and Area | Other Public Sector Employers | 2025 | 1 | $122,969 |
| Community Living Temiskaming South | Other Public Sector Employers | 2025 | 1 | $113,004 |
| Community Living Thunder Bay | Other Public Sector Employers | 2025 | 7 | $115,679 |
| Community Living Tillsonburg | Other Public Sector Employers | 2025 | 1 | $107,778 |
| Community Living Timmins | Other Public Sector Employers | 2025 | 1 | $115,781 |
| Community Living Toronto | Other Public Sector Employers | 2025 | 42 | $129,570 |
| Community Living Trent Highlands | Other Public Sector Employers | 2025 | 4 | $121,821 |
| Community Living Upper Ottawa Valley | Other Public Sector Employers | 2025 | 2 | $111,749 |
| Community Living Walkerton & District | Other Public Sector Employers | 2012 | 1 | $108,000 |
| Community Living Wallaceburg | Other Public Sector Employers | 2025 | 4 | $113,784 |
| Community Living Welland Pelham | Other Public Sector Employers | 2025 | 5 | $118,225 |
| Community Living West Nipissing | Other Public Sector Employers | 2025 | 1 | $101,749 |
| Community Living West Nipissing / Integration Communautaire de Nipissing Ouest | Other Public Sector Employers | 2023 | 2 | $103,857 |
| Community Living West Northumberland | Other Public Sector Employers | 2020 | 1 | $104,416 |
| Community Living Windsor | Other Public Sector Employers | 2025 | 10 | $123,145 |
| Community Living Windsor / Integration Communautaire Windsor | Other Public Sector Employers | 2012 | 2 | $126,983 |
| Community Living Windsor / L'Intégration Communautaire de Windsor | Other Public Sector Employers | 2013 | 2 | $122,838 |
| Community Living Wingham and District | Other Public Sector Employers | 2023 | 1 | $105,840 |
| Community Living York South | Other Public Sector Employers | 2025 | 4 | $122,090 |
| Community Living – North Frontenac | Other Public Sector Employers | 2025 | 1 | $101,210 |
| Community Living-Central Huron | Other Public Sector Employers | 2025 | 1 | $122,616 |
| Community Mental Health Clinic | Other Public Sector Employers | 2006 | 1 | $153,116 |
| Community MicroSkills Development Centre | Other Public Sector Employers | 2015 | 1 | $100,931 |
| Community Occupational Therapists & Assoc. | Other Public Sector Employers | 1997 | 1 | $125,660 |
| Community Occupational Therapists & Associates | Other Public Sector Employers | 1996 | 1 | $119,826 |
| Community Resource Centre (Killaloe) Inc | Other Public Sector Employers | 2025 | 1 | $110,885 |
| Community Safety and Correctional Services | Government of Ontario – Ministries | 2018 | 6,399 | $122,657 |
| Community Services Coordination Network (Ontario) | Other Public Sector Employers | 2025 | 3 | $109,779 |
| Community Services for Independence North West | Other Public Sector Employers | 2025 | 6 | $123,948 |
| Community Services of Belleville and District | Other Public Sector Employers | 2025 | 2 | $113,384 |
| Community Services to Jewish Elderly | Other Public Sector Employers | 1997 | 1 | $125,544 |
| Community Support Centre of Essex County | Other Public Sector Employers | 2025 | 1 | $139,597 |
| Community Support Connections-Meals on Wheels and More | Other Public Sector Employers | 2025 | 2 | $122,558 |
| Community Visions & Networking (Quinte) | Other Public Sector Employers | 2015 | 1 | $110,120 |
| Community Visions and Networking (Quinte) | Other Public Sector Employers | 2025 | 1 | $125,164 |
| Community Visions and Networking (Quinte) Association | Other Public Sector Employers | 2016 | 1 | $105,015 |
| Community/Primary Hlth. Care, Lanark Leeds & Grenville | Other Public Sector Employers | 2010 | 7 | $207,394 |
| Comp. Rehab. & Mental Health Svcs. | Other Public Sector Employers | 1998 | 1 | $129,591 |
| Compass Community Health | Other Public Sector Employers | 2025 | 13 | $169,640 |
| Compass Community Services | Other Public Sector Employers | 2024 | 1 | $123,896 |
| Compass, Boussole, Akii-Izhinoogan Mental Health, Development and Community Services for Children, Youth and Families | Other Public Sector Employers | 2025 | 12 | $118,159 |
| Compute Ontario | Other Public Sector Employers | 2025 | 3 | $210,210 |
| CON*NECT Strategic Alliances | Other Public Sector Employers | 2010 | 5 | $132,920 |
| Conestoga College Institute of Technology and Advanced Learning | Colleges | 2025 | 905 | $131,278 |
| Confederation College of Applied Arts and Technology | Colleges | 2025 | 178 | $129,959 |
| Connecting Dots Behavioral Services Inc | Other Public Sector Employers | 2025 | 2 | $108,054 |
| Connections an Early Years Family Centre Inc | Other Public Sector Employers | 2025 | 2 | $104,416 |
| Connecture Canada | Other Public Sector Employers | 2025 | 1 | $106,000 |
| Connectwell Community Health | Other Public Sector Employers | 2025 | 21 | $159,923 |
| Connell & Ponsford District School Area Board | School Boards | 2007 | 1 | $101,000 |
| Connexion Family Health Team | Other Public Sector Employers | 2023 | 1 | $122,178 |
| Connexion Family Health Team- L'Equipe de Sante Familiale Connexion | Other Public Sector Employers | 2017 | 2 | $100,997 |
| Connexontario Health Services Information | Other Public Sector Employers | 2022 | 1 | $104,101 |
| Conseil de la Cooperation de l’Ontario | Other Public Sector Employers | 2022 | 1 | $128,297 |
| Conseil des ecoles catholiques de langue francaise Region d'Ottawa-Carleton | School Boards | 1996 | 1 | $125,529 |
| Conseil des ecoles separees catholiques de langue francaise de Prescott-Russell | School Boards | 1996 | 1 | $110,000 |
| Conseil des Écoles Publiques de l'Est de l'Ontario | School Boards | 2025 | 1,093 | $127,661 |
| Conseil des écoles catholiques du Centre Sud-Ouest | Seconded to Ministries | 2016 | 1 | $155,420 |
| Conseil Economique et Social d'Ottawa-Carleton | Other Public Sector Employers | 2018 | 1 | $106,944 |
| Conseil Scolaire Catholique des Aurores Boréales | School Boards | 2025 | 81 | $132,213 |
| Conseil Scolaire Catholique des Grandes Rivières | School Boards | 2025 | 423 | $131,096 |
| Conseil Scolaire Catholique Franco-Nord | School Boards | 2025 | 221 | $134,341 |
| Conseil Scolaire Catholique MonAvenir | School Boards | 2025 | 1,027 | $128,056 |
| Conseil Scolaire Catholique Providence | School Boards | 2025 | 648 | $127,044 |
| Conseil scolaire de district | School Boards | 2002 | 3 | $125,189 |
| Conseil Scolaire de District Catholique de l'Est Ontarien | School Boards | 2025 | 724 | $129,502 |
| Conseil Scolaire de District Catholique du Centre-Est de l'Ontario | School Boards | 2025 | 1,733 | $127,356 |
| Conseil Scolaire de District Catholique du Nouvel-Ontario | School Boards | 2025 | 498 | $130,374 |
| Conseil Scolaire Public du Grand Nord de l'Ontario | School Boards | 2025 | 258 | $130,051 |
| Conseil Scolaire Public du Nord-est de l'Ontario | School Boards | 2025 | 200 | $131,237 |
| Conseil Scolaire Viamonde | School Boards | 2025 | 861 | $126,913 |
| Consent and Capacity Board | Crown Agencies | 2025 | 12 | $130,445 |
| Conservation Halton | Other Public Sector Employers | 2006 | 1 | $101,070 |
| Conservation Ontario | Other Public Sector Employers | 2025 | 7 | $134,716 |
| Conservation Review Board / Commission des biens culturels | Crown Agencies | 2017 | 1 | $111,380 |
| Conservation Toronto and Region | Crown Agencies | 1999 | 1 | $112,636 |
| Consolidated Health Information Services | Other Public Sector Employers | 2012 | 6 | $134,661 |
| Consortium Centre Jules-Léger | School Boards | 2025 | 36 | $142,303 |
| Consortium de services aux élèves de Sudbury | Other Public Sector Employers | 2007 | 1 | $136,456 |
| Consortium Pour les Eleves du Nord de l'Ontario | Other Public Sector Employers | 2025 | 11 | $130,816 |
| Construction and Allied Workers Local Union 607 Training and Education Fund (Liuna) | Other Public Sector Employers | 2025 | 2 | $132,000 |
| Consumer & Business Services | Government of Ontario – Ministries | 2004 | 20 | $119,511 |
| Consumer and Commercial Relat. | Government of Ontario – Ministries | 1997 | 15 | $117,974 |
| Consumer Services | Government of Ontario – Ministries | 2013 | 24 | $121,848 |
| Contact Brant for Children’s and Developmental Services | Other Public Sector Employers | 2024 | 1 | $147,444 |
| CONTACT Community Services | Other Public Sector Employers | 2023 | 1 | $103,673 |
| Contact Hamilton | Other Public Sector Employers | 2009 | 1 | $103,864 |
| Contact Hamilton for Children's & Developmental Services | Other Public Sector Employers | 2012 | 1 | $102,107 |
| Contact Hamilton for Children's and Developmental Services | Other Public Sector Employers | 2025 | 1 | $144,723 |
| Contact Hamilton Wentworth for Children's & Developmental Services | Other Public Sector Employers | 2013 | 1 | $116,586 |
| Contact Niagara for Children's and Developmental Services | Other Public Sector Employers | 2025 | 2 | $114,465 |
| Contact North | Other Public Sector Employers | 2025 | 6 | $119,036 |
| Contact North / Contact Nord | Other Public Sector Employers | 2016 | 1 | $175,935 |
| Contact North/Contact Nord | Other Public Sector Employers | 2008 | 1 | $161,353 |
| Contact Toronto Photography Association | Other Public Sector Employers | 2025 | 2 | $129,210 |
| Coordination des Services Coordination | Other Public Sector Employers | 2008 | 1 | $109,712 |
| COPA National | Other Public Sector Employers | 2025 | 1 | $118,710 |
| Copernicus Lodge Inc | Other Public Sector Employers | 2025 | 6 | $126,120 |
| Coral Communication Enabled Applications Keystone Limited | Other Public Sector Employers | 2014 | 4 | $153,849 |
| Coral Communications Enabled Applications Keystone | Other Public Sector Employers | 2011 | 1 | $196,378 |