| Dale Brain Injury Service Inc. | Other Public Sector Employers | 2010 | 1 | $101,942 |
| Dale Brain Injury Services Inc | Other Public Sector Employers | 2025 | 3 | $112,729 |
| Dave Smith Youth Treatment Centre | Other Public Sector Employers | 2016 | 1 | $114,166 |
| Davenport Perth Neighbourhood Centre | Other Public Sector Employers | 2010 | 3 | $147,228 |
| Davenport-Perth Neighbourhood and Community Health Centre | Other Public Sector Employers | 2025 | 13 | $175,305 |
| David Smith Youth Treatment Centre | Other Public Sector Employers | 2025 | 2 | $120,804 |
| De Dwa Da Dehs Nye's Aboriginal Health Centre | Other Public Sector Employers | 2025 | 12 | $140,290 |
| De dwa de dehs nye>s Aboriginal Health Centre | Other Public Sector Employers | 2010 | 1 | $246,088 |
| Deaf Literacy Initiative | Other Public Sector Employers | 2023 | 1 | $101,245 |
| Deafblind and Sensory Support Network of Canada | Other Public Sector Employers | 2025 | 6 | $141,129 |
| Deafblind Community Services | Other Public Sector Employers | 2025 | 2 | $150,618 |
| Deafblind Ontario Services | Other Public Sector Employers | 2025 | 8 | $139,165 |
| Death Investigation Oversight Council | Crown Agencies | 2025 | 3 | $116,420 |
| Death Investigation Oversight Council / Conseil de surveillance des enquêtes sur les décès | Crown Agencies | 2017 | 1 | $119,107 |
| Deep River and District Health | Hospitals & Boards of Public Health | 2025 | 28 | $139,126 |
| Deer Lake First Nation School | Other Public Sector Employers | 2025 | 4 | $108,287 |
| Delhi Imperial Place Community Health Centre Inc | Other Public Sector Employers | 2008 | 4 | $140,218 |
| Delisle House Association | Other Public Sector Employers | 2007 | 1 | $121,099 |
| Delisle Youth Services | Other Public Sector Employers | 2015 | 1 | $160,016 |
| Dellcrest Children's Centre | Other Public Sector Employers | 1997 | 1 | $106,485 |
| Delta Family Resource Centre | Other Public Sector Employers | 2025 | 1 | $105,810 |
| Delta Resources Limited | Other Public Sector Employers | 2023 | 1 | $220,629 |
| Dementia Alliance | Other Public Sector Employers | 2013 | 1 | $111,562 |
| Dementia Society of Ottawa and Renfrew County | Other Public Sector Employers | 2025 | 3 | $121,956 |
| Democratic Renewal Secretariat | Government of Ontario – Ministries | 2007 | 4 | $123,949 |
| Deposit Insurance Corporation of Ontario | Crown Agencies | 2018 | 25 | $135,453 |
| Design Exchange | Other Public Sector Employers | 2017 | 2 | $182,856 |
| Developmental Services of Leeds and Grenville | Other Public Sector Employers | 2025 | 3 | $143,628 |
| Dietitians of Canada | Other Public Sector Employers | 2015 | 7 | $165,768 |
| Dilico Anishinabek Family Care | Other Public Sector Employers | 2025 | 29 | $122,187 |
| Dist of Cochrane Soc. Srvcs. Admin. Bd. | Other Public Sector Employers | 2005 | 1 | $102,508 |
| Dist of Nipissing Social Srvcs Admin Bd. | Other Public Sector Employers | 2005 | 1 | $119,279 |
| Dist of Parry Sound Srvcs Admin Bd | Municipalities & Services | 2004 | 1 | $118,930 |
| Dist of Timiskaming Soc Srvcs Admin Bd | Municipalities & Services | 2005 | 1 | $103,860 |
| Dist. Catholic School Board #55 | School Boards | 1997 | 2 | $117,525 |
| Dist. of Cochrane Soc. Srvcs Adm. Brd | Other Public Sector Employers | 2001 | 1 | $118,933 |
| Dist. of Nipissing Soc. Srvcs. Admin Bd[9] | Municipalities & Services | 2004 | 1 | $102,001 |
| Dist.of Cochrane Soc.Srvcs Adm.Brd | Other Public Sector Employers | 2000 | 1 | $108,323 |
| District Municipality of Muskoka | Municipalities & Services | 2025 | 154 | $124,040 |
| District of Cochrane Social Services Admin. Bd. | Other Public Sector Employers | 2008 | 5 | $118,883 |
| District of Cochrane Social Services Admin. Board | Municipalities & Services | 2006 | 1 | $111,964 |
| District of Cochrane Social Services Administration Board | Other Public Sector Employers | 2025 | 100 | $120,196 |
| District of Kenora Home for the Aged | Other Public Sector Employers | 2025 | 34 | $130,633 |
| District of Manitoulin Board | Other Public Sector Employers | 2025 | 6 | $126,465 |
| District of Nipissing Social Services Administration Board | Other Public Sector Employers | 2025 | 87 | $117,458 |
| District of Parry Sound Social Services | Other Public Sector Employers | 2007 | 1 | $122,503 |
| District of Parry Sound Social Services Admin. Bd. | Municipalities & Services | 2008 | 2 | $112,914 |
| District of Parry Sound Social Services Administration Board | Other Public Sector Employers | 2025 | 17 | $129,179 |
| District of Sault Ste Marie Social Services Administration Board | Other Public Sector Employers | 2025 | 85 | $114,708 |
| District of Thunder Bay Social Services Administration Board | Other Public Sector Employers | 2025 | 18 | $117,763 |
| District of Thunder Bay Social Services Administration Board / Conseil d'administration des services sociaux du District de Thunder Bay | Other Public Sector Employers | 2013 | 7 | $113,832 |
| District of Timiskaming Social Services Admin Board | Other Public Sector Employers | 2025 | 51 | $125,764 |
| District of Timiskaming Social Services Admin. Bd. | Other Public Sector Employers | 2008 | 2 | $121,832 |
| District School Board of Niagara | School Boards | 2025 | 2,082 | $120,244 |
| District School Board Ontario North East | School Boards | 2025 | 408 | $123,462 |
| Dixie Bloor Neighbourhood Centre | Other Public Sector Employers | 2016 | 1 | $120,836 |
| Dixie Bloor Neighbourhood Drop-In Centre | Other Public Sector Employers | 2025 | 1 | $147,819 |
| Dixie Bloor Neighbourhood Drop–In Centre | Other Public Sector Employers | 2012 | 1 | $100,960 |
| Dixon Hall | Other Public Sector Employers | 2025 | 8 | $148,218 |
| Dnaagdawenmag Binnoojiiyag Child and Family Services | Other Public Sector Employers | 2025 | 41 | $120,783 |
| Dnaagdawenmag Binoojiiyag Child & Family Services | Other Public Sector Employers | 2015 | 1 | $108,166 |
| Doctors Hospital | Hospitals & Boards of Public Health | 1998 | 1 | $213,017 |
| Doctors Without Borders Canada | Other Public Sector Employers | 2014 | 2 | $128,840 |
| Domestic Abuse Services Oxford | Other Public Sector Employers | 2020 | 1 | $101,350 |
| Dominion Institute | Other Public Sector Employers | 2005 | 1 | $113,148 |
| Don Mills Family Health Team | Other Public Sector Employers | 2023 | 2 | $111,231 |
| Don Mills Foundation | Other Public Sector Employers | 2000 | 1 | $110,010 |
| Don Mills Foundation for Senior Citizens Inc | Other Public Sector Employers | 2003 | 1 | $121,196 |
| Don Mills Foundation for Seniors | Other Public Sector Employers | 2010 | 1 | $117,930 |
| Don Mills Foundation for Sr. Citizens | Other Public Sector Employers | 2002 | 1 | $118,190 |
| Donwood Institute | Hospitals & Boards of Public Health | 1996 | 2 | $162,500 |
| Dorothy Ley Hospice | Other Public Sector Employers | 2014 | 1 | $100,000 |
| Dorothy Ley Hospice Inc | Other Public Sector Employers | 2025 | 4 | $122,640 |
| Dorval Medical Associates Family Health Team | Other Public Sector Employers | 2023 | 2 | $141,971 |
| Dorval Medical Family Health Team | Other Public Sector Employers | 2014 | 2 | $104,235 |
| Downsview Long Term Care Centre | Other Public Sector Employers | 2013 | 1 | $124,812 |
| Downsview Service for Seniors | Other Public Sector Employers | 2013 | 1 | $108,414 |
| Downsview Services for Seniors | Other Public Sector Employers | 2011 | 1 | $100,848 |
| Dr Bob Kemp Hospice Foundation Inc | Other Public Sector Employers | 2025 | 3 | $116,122 |
| Dr Roz's Healing Place | Other Public Sector Employers | 2019 | 1 | $107,706 |
| Dream Legacy Foundation | Other Public Sector Employers | 2024 | 1 | $120,000 |
| Drop-In Centre Kingston Inc. | Other Public Sector Employers | 2013 | 1 | $109,046 |
| Drs. Paul and John Rekai Centre | Other Public Sector Employers | 2014 | 2 | $143,105 |
| Dryden BE | School Boards | 1997 | 1 | $100,227 |
| Dryden District R.C.S.S. Board | School Boards | 1996 | 1 | $104,114 |
| Dryden District Senior Services Inc | Other Public Sector Employers | 2025 | 1 | $131,852 |
| Dryden Regional Health Centre | Hospitals & Boards of Public Health | 2025 | 88 | $124,447 |
| Dryden Regional Hospital | Hospitals & Boards of Public Health | 2004 | 2 | $119,734 |
| DSB # 15 | School Boards | 1997 | 4 | $105,378 |
| DSB du Nord-Est de l'Ontario | School Boards | 2005 | 3 | $111,111 |
| Dubreuilville Roman Catholic Separate School Board | School Boards | 2007 | 2 | $104,468 |
| Ducks Unlimited Canada | Other Public Sector Employers | 2024 | 9 | $168,125 |
| Dufferin Area Family Health Team | Other Public Sector Employers | 2023 | 3 | $110,115 |
| Dufferin Association for Community Living | Other Public Sector Employers | 2023 | 5 | $114,766 |
| Dufferin Child & Family Services | Other Public Sector Employers | 2013 | 4 | $110,863 |
| Dufferin Child and Family Services | Other Public Sector Employers | 2025 | 16 | $124,617 |
| Dufferin County Board of Education | School Boards | 1996 | 1 | $105,237 |
| Dufferin-Caledon Health Care Corp. | Hospitals & Boards of Public Health | 1999 | 1 | $125,178 |
| Dufferin-Peel Catholic Distirct School Board | Seconded to Ministries | 2016 | 2 | $149,351 |
| Dufferin-Peel Catholic District School Board | School Boards | 2025 | 4,239 | $124,627 |