| Taddle Creek Family Health Team | Other Public Sector Employers | 2023 | 4 | $116,854 |
| Taibu Community Health Centre | Other Public Sector Employers | 2025 | 9 | $183,120 |
| Tamir Foundation | Other Public Sector Employers | 2025 | 5 | $128,568 |
| Tay Valley Township | Municipalities & Services | 2025 | 4 | $148,548 |
| Taykwa Tagamou Nation | Other Public Sector Employers | 2025 | 1 | $116,023 |
| Tayside Community Residential and Support Options | Other Public Sector Employers | 2025 | 1 | $102,183 |
| Teachers of English Second Language of Ontario (TESL) | Other Public Sector Employers | 2018 | 1 | $110,799 |
| Team Rubicon Canada | Other Public Sector Employers | 2025 | 5 | $135,988 |
| TechAlliance of South Western Ontario | Other Public Sector Employers | 2011 | 1 | $152,385 |
| Techalliance of Southwestern Ontario | Other Public Sector Employers | 2025 | 1 | $253,592 |
| TEDCO | Other Public Sector Employers | 1999 | 1 | $180,727 |
| Telecomm. Research Inst. of Ont. | Crown Agencies | 1997 | 1 | $114,100 |
| Temagami Forest Management Corporation | Crown Agencies | 2025 | 1 | $131,418 |
| Temagami Medical Centre and Family Health Team | Other Public Sector Employers | 2023 | 1 | $118,691 |
| Temiskaming Hospital | Hospitals & Boards of Public Health | 2025 | 71 | $126,192 |
| Temiskaming Native Women's Support Group | Other Public Sector Employers | 2025 | 2 | $116,228 |
| Teresa Group Child & Family Aid | Other Public Sector Employers | 2012 | 1 | $109,840 |
| Teresa Group Child and Family Aid | Other Public Sector Employers | 2025 | 1 | $103,491 |
| TESL Association of Ontario | Other Public Sector Employers | 2020 | 1 | $111,846 |
| Thames River Children's Centre | Other Public Sector Employers | 2009 | 1 | $169,029 |
| Thames Valley Children's Centre | Other Public Sector Employers | 2025 | 35 | $119,504 |
| Thames Valley Children's Ctr. | Hospitals & Boards of Public Health | 2004 | 1 | $121,969 |
| Thames Valley Children's Trtmt. Cent. | Other Public Sector Employers | 1998 | 1 | $107,693 |
| Thames Valley DHC | Other Public Sector Employers | 2004 | 1 | $116,015 |
| Thames Valley District Hlth Council | Other Public Sector Employers | 2002 | 1 | $106,166 |
| Thames Valley District School Board | School Boards | 2025 | 4,186 | $119,112 |
| Thames Valley Family Health Team | Other Public Sector Employers | 2023 | 29 | $121,783 |
| Thamesview Family Health Team | Other Public Sector Employers | 2023 | 1 | $127,244 |
| Thorncliffe Neighbourhood Office | Other Public Sector Employers | 2016 | 1 | $119,993 |
| Thorncliffe Neighbourhood Office of Toronto for Social & Multicultural Development | Other Public Sector Employers | 2011 | 1 | $105,119 |
| Thorncliffe Neighbourhood Office, Social/Multicultural Dev. | Other Public Sector Employers | 2010 | 1 | $104,387 |
| Thorneloe University | Universities | 2020 | 6 | $134,476 |
| Three Oaks Foundation | Other Public Sector Employers | 2025 | 1 | $105,743 |
| Three Trilliums Community Place Inc. | Other Public Sector Employers | 2012 | 1 | $111,670 |
| Thresholds Homes and Supports Inc | Other Public Sector Employers | 2025 | 3 | $122,861 |
| Thrive Child Development Centre | Other Public Sector Employers | 2025 | 8 | $115,433 |
| Thrive Child Development Centre Centre de Developpement de l'Enfant | Other Public Sector Employers | 2018 | 1 | $110,000 |
| Thrive Counselling Services Halton Inc | Other Public Sector Employers | 2025 | 1 | $125,450 |
| Thrive Housing and Support | Other Public Sector Employers | 2025 | 3 | $114,204 |
| Thunder Bay Catholic District School Board | School Boards | 2025 | 451 | $119,681 |
| Thunder Bay Comm. Economic Dev. Commission Inc. | Municipalities & Services | 2010 | 1 | $135,725 |
| Thunder Bay Community Economic Dev. Comm. | Municipalities & Services | 2008 | 1 | $135,692 |
| Thunder Bay Community Economic Dev. Commission Inc. | Other Public Sector Employers | 2009 | 1 | $140,917 |
| Thunder Bay Community Economic Development Commission Inc | Other Public Sector Employers | 2017 | 2 | $138,879 |
| Thunder Bay Counselling Centre | Other Public Sector Employers | 2025 | 5 | $131,671 |
| Thunder Bay District Health Unit | Hospitals & Boards of Public Health | 2025 | 28 | $137,985 |
| Thunder Bay District Housing Corporation | Municipalities & Services | 2009 | 1 | $127,644 |
| Thunder Bay District Social Services Administration Board | Other Public Sector Employers | 2007 | 1 | $126,084 |
| Thunder Bay Multicultural Association | Other Public Sector Employers | 2021 | 2 | $143,723 |
| Thunder Bay RCDSB | School Boards | 2000 | 1 | $120,720 |
| Thunder Bay Regional Health Sciences Centre | Hospitals & Boards of Public Health | 2025 | 1,070 | $125,995 |
| Thunder Woman Healing Lodge Society | Other Public Sector Employers | 2025 | 2 | $116,572 |
| Tides Canada Initiatives Society | Other Public Sector Employers | 2012 | 2 | $116,646 |
| Tikinagan Child and Family Services | Other Public Sector Employers | 2025 | 20 | $123,153 |
| Tilbury District Family Health Team (TDFHT) | Other Public Sector Employers | 2023 | 2 | $108,596 |
| Tillsonburg | Hospitals & Boards of Public Health | 1999 | 1 | $130,432 |
| Tillsonburg and District Multi-Service Centre | Other Public Sector Employers | 2025 | 1 | $133,477 |
| Tillsonburg District Memorial | Hospitals & Boards of Public Health | 2006 | 1 | $141,289 |
| Tillsonburg District Memorial Hosp. | Hospitals & Boards of Public Health | 2001 | 1 | $112,039 |
| Tillsonburg District Memorial Hospital | Hospitals & Boards of Public Health | 2025 | 74 | $123,767 |
| Timiskaming BE | School Boards | 1997 | 2 | $107,701 |
| Timiskaming Board of Education | School Boards | 1996 | 3 | $105,120 |
| Timiskaming C & FS | Other Public Sector Employers | 2003 | 1 | $106,393 |
| Timiskaming C&FS | Other Public Sector Employers | 2002 | 1 | $120,069 |
| Timiskaming Child & Family Services | Other Public Sector Employers | 2010 | 4 | $120,559 |
| Timiskaming Children's Aid | Other Public Sector Employers | 1999 | 1 | $102,371 |
| Timiskaming Health Unit | Hospitals & Boards of Public Health | 2010 | 3 | $128,595 |
| Timiskaming Home Support | Other Public Sector Employers | 2025 | 1 | $113,282 |
| Timmins Academic Family Health Team | Other Public Sector Employers | 2023 | 8 | $121,911 |
| Timmins and Area Women in Crisis | Other Public Sector Employers | 2025 | 1 | $102,276 |
| Timmins and District Hospital | Hospitals & Boards of Public Health | 2025 | 280 | $128,166 |
| Timmins and District Victim Services | Other Public Sector Employers | 2022 | 1 | $108,523 |
| Timmins BE | School Boards | 1997 | 3 | $106,148 |
| Timmins Board of Education | School Boards | 1996 | 1 | $108,462 |
| Timmins District R.C.S.S. Board | School Boards | 1996 | 1 | $118,699 |
| Timmins District RCSSB | School Boards | 1997 | 4 | $106,526 |
| Timmins Family Counselling Centre Inc | Other Public Sector Employers | 2025 | 1 | $100,155 |
| Timmins Family Health Team | Other Public Sector Employers | 2018 | 5 | $108,770 |
| Timmins Native Friendship Centre | Other Public Sector Employers | 2019 | 2 | $116,910 |
| TNO – The Neighbourhood Organization | Other Public Sector Employers | 2025 | 6 | $143,256 |
| Tobias House Attendant Care Inc. | Other Public Sector Employers | 2016 | 1 | $123,308 |
| Today's Family | Other Public Sector Employers | 2006 | 1 | $120,541 |
| Today's Family Caring for Your Child | Other Public Sector Employers | 2017 | 2 | $126,880 |
| Today's Family Caring for Your Family | Other Public Sector Employers | 2009 | 1 | $126,575 |
| Tor. Aged Men's & Women's Homes | Other Public Sector Employers | 2003 | 1 | $115,507 |
| Toronto & Reg. Conservation Auth. | Crown Agencies | 2002 | 2 | $110,211 |
| Toronto & Region Conserv. Auth. | Crown Agencies | 1997 | 1 | $105,074 |
| Toronto & Region Conservation Auth. | Other Public Sector Employers | 1999 | 1 | $112,636 |
| Toronto (Metro) Housing Co. | Other Public Sector Employers | 1997 | 1 | $117,561 |
| Toronto (Metro) Library Brd. | Other Public Sector Employers | 1997 | 1 | $113,167 |
| Toronto (Metro) Zoo | Other Public Sector Employers | 1997 | 1 | $127,715 |
| Toronto Aged Men's & Women's Home | Other Public Sector Employers | 2010 | 2 | $133,590 |
| Toronto Area Transit Operating Authority | Crown Agencies | 1996 | 1 | $119,564 |
| Toronto Association of Business Improvement Areas (Tabia) | Other Public Sector Employers | 2023 | 2 | $171,081 |
| Toronto Bail Program | Other Public Sector Employers | 2025 | 2 | $124,237 |
| Toronto Biennial of Art | Other Public Sector Employers | 2021 | 3 | $116,667 |
| Toronto Board of Education | School Boards | 1997 | 28 | $116,047 |
| Toronto Business Development Centre | Other Public Sector Employers | 2025 | 4 | $105,576 |
| Toronto Catholic District School Board | School Boards | 2025 | 5,592 | $130,825 |
| Toronto Central Community Care Access Centre | Other Public Sector Employers | 2016 | 33 | $123,424 |