| Le Reseau de Developpement Economique et d'Employabilite de l'Ontario (RDEE-Ontario) | Other Public Sector Employers | 2018 | 1 | $142,894 |
| Leads Employment Services London Inc | Other Public Sector Employers | 2025 | 2 | $123,021 |
| Leads Employment Services London Incorporated | Other Public Sector Employers | 2013 | 1 | $102,984 |
| Leamington District Memorial | Hospitals & Boards of Public Health | 2000 | 1 | $117,000 |
| Leamington District Memorial Hosp. | Hospitals & Boards of Public Health | 2005 | 4 | $140,239 |
| Leamington United Mennonite Homes and Apts | Other Public Sector Employers | 2025 | 7 | $113,655 |
| Learning Disabilities Assoc of Toronto Districts | Other Public Sector Employers | 2025 | 1 | $124,693 |
| Learning Disabilities Association of Ontario | Other Public Sector Employers | 2025 | 1 | $125,000 |
| Learning Enrichment Foundation | Other Public Sector Employers | 2025 | 7 | $135,468 |
| Learning Partnership | Other Public Sector Employers | 2018 | 3 | $129,137 |
| Learning Partnership Canada | Other Public Sector Employers | 2013 | 1 | $210,000 |
| Learning Place | Other Public Sector Employers | 2024 | 1 | $130,000 |
| Lebanese & Arab Social Service Agency of Ottawa-Carleton | Other Public Sector Employers | 2022 | 1 | $107,468 |
| Leeds & Grenville Community Family Health Team | Other Public Sector Employers | 2017 | 1 | $118,330 |
| Leeds & Grenville Mental Health | Other Public Sector Employers | 2015 | 4 | $133,686 |
| Leeds & Grenville Rehabilitation & Counselling Services | Other Public Sector Employers | 2011 | 1 | $104,662 |
| Leeds and Greenville Mental Health | Other Public Sector Employers | 2014 | 2 | $132,069 |
| Leeds and Grenville Community Family Health Team | Other Public Sector Employers | 2023 | 10 | $171,951 |
| Leeds and Grenville County Board of Education | School Boards | 1997 | 5 | $106,023 |
| Leeds and Grenville Interval House | Other Public Sector Employers | 2025 | 1 | $128,563 |
| Leeds Grinville & Lanark District Health Unit | Other Public Sector Employers | 1997 | 1 | $126,531 |
| Leeds, Grenville & Lanark District Health Unit | Other Public Sector Employers | 2004 | 1 | $159,952 |
| Leeds, Grenville & Lanark District Hlth | Hospitals & Boards of Public Health | 2005 | 1 | $140,602 |
| Leeds,Grenville & Lanark DHU | Other Public Sector Employers | 1999 | 1 | $120,420 |
| Legal Aid Ontario | Crown Agencies | 2025 | 597 | $138,634 |
| Legislative Assembly | Government of Ontario – Legislative Assembly and Offices | 2025 | 327 | $150,865 |
| Lennox & Addington Addiction & Community Health Services Inc. | Other Public Sector Employers | 2013 | 3 | $147,893 |
| Lennox & Addington Cnty Library Brd. | Other Public Sector Employers | 2002 | 1 | $103,054 |
| Lennox & Addington County | Hospitals & Boards of Public Health | 2003 | 1 | $103,993 |
| Lennox & Addington Cty. Gen. Hosp. | Hospitals & Boards of Public Health | 2005 | 1 | $117,246 |
| Lennox & Addington Family & Children's Services | Other Public Sector Employers | 2011 | 3 | $124,799 |
| Lennox and Addington County Board of Education | School Boards | 1997 | 2 | $100,425 |
| Lennox and Addington County General Hospital | Hospitals & Boards of Public Health | 2025 | 67 | $129,522 |
| Les Centres d'Accueil Heritage | Other Public Sector Employers | 2025 | 2 | $116,855 |
| Les Femmes Michif Otipemisiwak | Other Public Sector Employers | 2018 | 1 | $100,615 |
| Let's Talk Science | Other Public Sector Employers | 2016 | 1 | $144,385 |
| LHIN 4 Hospitals | Hospitals & Boards of Public Health | 2006 | 1 | $174,996 |
| Licence Appeal Tribunal | Crown Agencies | 2016 | 1 | $167,076 |
| Lieutenant Governor | Government of Ontario – Legislative Assembly and Offices | 2025 | 10 | $139,825 |
| Life Sciences Ontario | Other Public Sector Employers | 2012 | 1 | $102,000 |
| Lighthouse Festival Theatre Corporation | Other Public Sector Employers | 2023 | 1 | $100,994 |
| Limestone District School Board | School Boards | 2025 | 993 | $120,359 |
| Linck Child, Youth and Family Supports | Other Public Sector Employers | 2025 | 15 | $127,375 |
| Lincoln County BE | School Boards | 1997 | 2 | $108,598 |
| Lincoln County Board of Education | School Boards | 1996 | 1 | $114,756 |
| Lincoln County RCSSB | School Boards | 1997 | 1 | $111,000 |
| Lincoln County Roman Catholic Separate School Board | School Boards | 1996 | 1 | $103,943 |
| Links2care | Other Public Sector Employers | 2025 | 3 | $124,327 |
| Liquor Control Board of Ontario | Crown Agencies | 2025 | 1,269 | $135,779 |
| Listowel Memorial Hospital | Hospitals & Boards of Public Health | 2025 | 47 | $124,685 |
| Listowel Wingham Hospital Alliance | Hospitals & Boards of Public Health | 2009 | 6 | $125,485 |
| Listowel Wingham Hospitals Alliance | Hospitals & Boards of Public Health | 2007 | 1 | $169,642 |
| Listowel-Wingham and Area Family Health Team | Other Public Sector Employers | 2023 | 3 | $114,913 |
| LIUNA Local 1059 Training Trust Fund | Other Public Sector Employers | 2016 | 1 | $135,000 |
| Liuna Local 183 Training & Rehabilitation Centre | Other Public Sector Employers | 2011 | 6 | $154,508 |
| Liuna Local 183 Training and Rehabilitation Fund | Other Public Sector Employers | 2024 | 23 | $155,573 |
| LIUNA Local 506 Training Centre | Other Public Sector Employers | 2016 | 4 | $116,483 |
| Livestock Research Innovation Corporation (LRIC) | Other Public Sector Employers | 2025 | 1 | $135,620 |
| Liveworkplay | Other Public Sector Employers | 2025 | 2 | $109,260 |
| Local 120 Internat Brotherhoodof Electrical Workers | Other Public Sector Employers | 2025 | 3 | $136,680 |
| Local 1946 United Brotherhood of Carpenters & Joiners | Other Public Sector Employers | 2025 | 1 | $112,420 |
| Local 2309 Ub of C&J of a | Other Public Sector Employers | 2025 | 2 | $125,821 |
| Local 285 Training Centre | Other Public Sector Employers | 2014 | 1 | $102,556 |
| Local 303 International Brotherhood of Electrical Workers | Other Public Sector Employers | 2025 | 1 | $135,448 |
| Local 527 United Assn Plumbers & Steam Joint Training Fund | Other Public Sector Employers | 2025 | 2 | $144,149 |
| Local 837 Nursing Home (Hamilton) Corp | Other Public Sector Employers | 2025 | 6 | $115,699 |
| Local Health Integration Network - Central | Crown Agencies | 2023 | 63 | $124,703 |
| Local Health Integration Network - Central East | Crown Agencies | 2023 | 71 | $120,710 |
| Local Health Integration Network - Central West | Crown Agencies | 2023 | 33 | $121,424 |
| Local Health Integration Network - Champlain | Crown Agencies | 2023 | 52 | $118,631 |
| Local Health Integration Network - Erie St. Clair | Crown Agencies | 2023 | 50 | $118,258 |
| Local Health Integration Network - Hamilton Niagara Haldimand Brant | Crown Agencies | 2023 | 93 | $123,731 |
| Local Health Integration Network - Mississauga Halton | Crown Agencies | 2023 | 52 | $121,015 |
| Local Health Integration Network - North East | Crown Agencies | 2023 | 52 | $122,670 |
| Local Health Integration Network - North Simcoe Muskoka | Crown Agencies | 2023 | 19 | $123,861 |
| Local Health Integration Network - North West Ontario | Crown Agencies | 2023 | 18 | $117,519 |
| Local Health Integration Network - South East | Crown Agencies | 2023 | 44 | $123,181 |
| Local Health Integration Network - South West | Crown Agencies | 2023 | 67 | $117,017 |
| Local Health Integration Network - Toronto Central | Crown Agencies | 2023 | 57 | $113,398 |
| Local Health Integration Network - Waterloo Wellington | Crown Agencies | 2023 | 37 | $114,443 |
| Local Planning Appeal Support Centre | Other Public Sector Employers | 2018 | 1 | $126,949 |
| Loft Community Services | Other Public Sector Employers | 2025 | 32 | $125,887 |
| LOFT Community Srvcs. | Other Public Sector Employers | 2004 | 1 | $120,393 |
| London & Middlesex Housing Corporation | Municipalities & Services | 2011 | 1 | $115,813 |
| London and Middlesex Housing Corporation | Other Public Sector Employers | 2017 | 2 | $112,170 |
| London Board of Education | School Boards | 1997 | 8 | $111,663 |
| London Community Small Business Centre Inc | Other Public Sector Employers | 2025 | 1 | $121,872 |
| London Convenion Centre | Other Public Sector Employers | 2000 | 1 | $102,500 |
| London Convention Centre | Municipalities & Services | 2011 | 1 | $158,521 |
| London DCSB | School Boards | 2002 | 7 | $117,745 |
| London District Catholic School Board | School Boards | 2025 | 1,124 | $121,766 |
| London Family Court Clinic Inc | Other Public Sector Employers | 2025 | 1 | $118,862 |
| London Family Health Team | Other Public Sector Employers | 2023 | 1 | $119,415 |
| London Health Sciences Centre | Hospitals & Boards of Public Health | 2025 | 3,924 | $125,328 |
| London Inter CHC | Other Public Sector Employers | 2004 | 1 | $101,892 |
| London Inter-Community Health Centre | Other Public Sector Employers | 2005 | 1 | $125,484 |
| London Intercommunity Health Centre | Other Public Sector Employers | 2025 | 20 | $150,971 |
| London Police Service Board | Other Public Sector Employers | 2002 | 8 | $111,637 |
| London Public Library | Other Public Sector Employers | 2002 | 1 | $118,355 |
| London Training Centre Inc | Other Public Sector Employers | 2024 | 1 | $149,327 |