| D3P Sports | |
| D3P Sports, D3P All Abilities, D3P Basketball, D3P Fitness | |
| DARE to LOVE Sports Club | |
| Davis Centre, Adult Day Program | Bolton |
| Davis Centre, Nursing Home | Bolton |
| Deaf Literacy Initiative | Georgetown |
| DEEN Support Services | |
| Deerwood Creek Care Community | Etobicoke |
| Dentures and Implant Solutions-Riverview | |
| Derry Road Physiotherapy and Rehab Centre | Malton |
| Developing Hands - Pediatric Therapy | Mississauga |
| Developmental Services Ontario, Mississauga Office | Mississauga |
| Developmental Services Ontario, Peel Office | Brampton |
| Dhaliwal Pharmacy | Mississauga |
| DirectSmiles Professional Mobile Dental Hygiene Services | Bolton |
| Discovery Patch: Children's Interactive Museum (The) | Mississauga |
| Distress Centre Halton, Georgetown Location | Georgetown |
| Distress Centres of Greater Toronto | Brampton |
| Distress Centres of Greater Toronto, Helpline | Mississauga |
| Dixie Bloor Neighbourhood Centre | Mississauga |
| Dixie Bloor Neighbourhood Centre, Employment Ontario Employment Services | Mississauga |
| Dixie Bloor Neighbourhood Centre, Employment Programs, Job Search Workshops | Mississauga |
| Dixie Curling Club Ltd | Mississauga |
| Dixie Village Pharmacy | Mississauga |
| Dixie X-Ray Associates, Burnhamthorpe Professional Building | Mississauga |
| Dixie X-Ray Associates, City Centre Medical Arts Building | Mississauga |
| Dixie X-Ray Associates, High-Point Medical Building, Mississauga - Dixie Rd | Mississauga |
| Dixie-5 Pharmacy | Mississauga |
| Doctors R Us | Brampton |
| Don Rowing Club of Mississauga | Mississauga |
| Dorado Stars Swim Club | Caledon (Town of) |
| Dorothy Ley Hospice (The) | Etobicoke |
| Dorval Medical Family Health Team | Oakville |
| Down Syndrome Association of Peel | Brampton |
| Down Syndrome Association of Toronto | North York Central |
| Downsizing Diva, Dufferin-Caledon | Caledon |
| Downtown Dental Hygiene Clinic | |
| Dr A I Kravetz - Eye Physician and Surgeon | Etobicoke North |
| Dr Ebrahim and Associates | Brampton |
| Dr Langer Family Medicine and Walk In Clinic | Brampton |
| Dr. Barbara Newton, Family Physician | Mississauga |
| Dr. William Rodriguez and Associates, Mississauga | Mississauga (City of) |
| Dr. William Rodriguez Dentistry Professional Corporation | Mississauga |
| DramaWay | Greater Toronto Area |
| Dream Crest Pharmacy | Mississauga |
| Drenkelly Residential Home | Mississauga |
| DRS Physio and Wellness | Brampton |
| Drug Basics | Mississauga |
| DRUGStore Pharmacy, Mississauga - Eglinton Ave W | Mississauga |
| DRUGStore Pharmacy, Mississauga - Glen Erin Dr | Mississauga |
| Dufferin Area Family Health Team | Orangeville |
| Dufferin Area Family Health Team, 5th Avenue Medical Clinic | Orangeville |
| Dufferin Area Family Health Team, Grand Valley Medical Clinic | Grand Valley |
| Dufferin Area Family Health Team, Orangeville Family Medical Centre | Orangeville |
| Dufferin Area Family Health Team, Shelburne Centre for Health | Shelburne |
| Dufferin Child and Family Services | Orangeville |
| Dufferin Child and Family Services, Headwaters Family Visit Centre | Orangeville |
| Dufferin County Community Services | Orangeville |
| Dufferin County Community Services, Employment Resource Centres | Orangeville |
| Dufferin County Community Services, Financial Assistance | Orangeville |
| Dufferin County Community Services, Housing Program and Services | Orangeville |
| Dufferin County Community Support Services | Shelburne |
| Dufferin County Community Support Services, Adult Day Program | Shelburne |
| Dufferin County Community Support Services, Home Help | Shelburne |
| Dufferin County Community Support Services, Home Maintenance | Shelburne |
| Dufferin County Community Support Services, Meals on Wheels | Shelburne |
| Dufferin County Community Support Services, Volunteers and Friendly Visiting | Shelburne |
| Dufferin Oaks | Shelburne |
| Dufferin Parent Support Network | Orangeville |
| Dufferin Peel Catholic Disctrict Board, Our Lady of Fatima | Brampton |
| Dufferin Peel Catholic Disctrict Board, St. Evan Catholic Elementary School | Caledon |
| Dufferin Peel Catholic Disctrict Board, St. Philip Elementary School | Mississauga |
| Dufferin Peel Catholic District Board, Father Clair Tipping | Brampton |
| Dufferin Peel Catholic District Board, Lester B. Pearson | Brampton |
| Dufferin Peel Catholic District School Board, All Saints | Mississauga |
| Dufferin Peel Catholic District School Board, Caledon Schools | Caledon |
| Dufferin Peel Catholic District School Board, Christ the King Catholic School | Mississauga |
| Dufferin Peel Catholic District School Board, Corpus Christi Separate School | Mississauga |
| Dufferin Peel Catholic District School Board, Father C.W. Sullivan Catholic School | Brampton (City of) |
| Dufferin Peel Catholic District School Board, Father Francis McSpiritt Catholic Elementary School | Bramalea |
| Dufferin Peel Catholic District School Board, Georges Vanier Catholic School | Bramalea |
| Dufferin Peel Catholic District School Board, Good Shepard Catholic School | Brampton (City of) |
| Dufferin Peel Catholic District School Board, Holy Family Elementary School | Bolton |
| Dufferin Peel Catholic District School Board, Lester B. Pearson Catholic School | Brampton |
| Dufferin Peel Catholic District School Board, Mary Fix Catholic School | Erin Mills |
| Dufferin Peel Catholic District School Board, Our Lady of Providence | Brampton |
| Dufferin Peel Catholic District School Board, Pauline Vanier Catholic Elementary School | Brampton |
| Dufferin Peel Catholic District School Board, Psychology Department | Mississauga |
| Dufferin Peel Catholic District School Board, Robert F. Hall Catholic Secondary School | Caledon East |
| Dufferin Peel Catholic District School Board, St John The Baptist Elementary School | Bolton |
| Dufferin Peel Catholic District School Board, St Patrick Separate School | Bramalea |
| Dufferin Peel Catholic District School Board, St. Alphonsa Catholic Elementary School | Brampton |
| Dufferin Peel Catholic District School Board, St. André Bessette Catholic Elementary School | Brampton |
| Dufferin Peel Catholic District School Board, St. Bonaventure Catholic Elementary School | Brampton |
| Dufferin Peel Catholic District School Board, St. Charles Garnier | Streetsville |
| Dufferin Peel Catholic District School Board, St. Cornelius Elementary School | Caledon East |
| Dufferin Peel Catholic District School Board, St. Cristopher Separate School | Erin Mills |
| Dufferin Peel Catholic District School Board, St. Daniel Comboni Elementary School | Brampton |
| Dufferin Peel Catholic District School Board, St. David of Wales Separate School | Cooksville |
| Dufferin Peel Catholic District School Board, St. Edith Stein Elementary School | Mississauga |
| Dufferin Peel Catholic District School Board, St. Francis of Assisi Catholic School | Erin Mills |
| Dufferin Peel Catholic District School Board, St. Francis Xavier Elementary School | Brampton |
| Dufferin Peel Catholic District School Board, St. Gregory Elementary School | Mississauga |
| Dufferin Peel Catholic District School Board, St. Helen Separate School | Mississauga |
| Dufferin Peel Catholic District School Board, St. Hilary | Cooksville |
| Dufferin Peel Catholic District School Board, St. Isaac Jogues | Brampton (City of) |
| Dufferin Peel Catholic District School Board, St. Jacinta Marto Catholic Elementary School | Brampton |
| Dufferin Peel Catholic District School Board, St. Jacinta Marto Catholic Elementary School | Brampton |
| Dufferin Peel Catholic District School Board, St. Jean Brebeuf | Brampton |
| Dufferin Peel Catholic District School Board, St. Jerome Separate School | Mississauga |
| Dufferin Peel Catholic District School Board, St. John of the Cross Catholic School | Streetsville |
| Dufferin Peel Catholic District School Board, St. John Paul II Catholic Elementary School | Bolton |
| Dufferin Peel Catholic District School Board, St. Josephine Bakhita Catholic Elementary School | Brampton |
| Dufferin Peel Catholic District School Board, St. Julia Catholic Elementary School | Mississauga |
| Dufferin Peel Catholic District School Board, St. Mark Separate School | Mississauga |
| Dufferin Peel Catholic District School Board, St. Nicholas Elementary School | Bolton |
| Dufferin Peel Catholic District School Board, St. Oscar Romero Catholic Secondary School | Mississauga |
| Dufferin Peel Catholic District School Board, St. Raphael Elementary School | Malton |
| Dufferin Peel Catholic District School Board, St. Richard Catholic Elementary School | Mississauga |
| Dufferin Peel Catholic District School Board, St. Sebastian Catholic Elementary School | Mississauga |
| Dufferin Peel Catholic District School Board, St. Simon Stock Elementary School | Mississauga |
| Dufferin Peel Catholic District School Board, St. Sofia Separate School | Mississauga |
| Dufferin Peel Catholic District School Board, St. Thomas More Separate School | Cooksville |
| Dufferin Peel Catholic District School Board, St. Valentine Elementary School | Mississauga |
| Dufferin Peel Catholic District School Board, St.John Bosco | Brampton |
| Dufferin Peel Catholic District School Board, Sts. Martha and Mary Catholic School | Mississauga |
| Dufferin Peel Catholic District School Board, Trustee Caledon, Frank Di Cosola | Caledon |
| Dufferin Peel Catholic District School Board, Bishop Scalabrini Seperate School | Cooksville |
| Dufferin Peel Catholic District School Board, Canadian Martyrs | Mississauga (City of) |
| Dufferin Peel Catholic District School Board, Divine Mercy | Mississauga (City of) |
| Dufferin Peel Catholic District School Board, Good Shepherd | Brampton (City of) |
| Dufferin Peel Catholic District School Board, Our Lady of Mercy | Erin Mills |
| Dufferin Peel Catholic District School Board, St. Agnes | Brampton (City of) |
| Dufferin Peel Catholic District School Board, St. Albert of Jerusalem | Mississauga |
| Dufferin Peel Catholic District School Board, St. Angela Merici Elementary | Brampton |
| Dufferin Peel Catholic District School Board, St. Barbara Elementary | Mississauga |
| Dufferin Peel Catholic District School Board, St. Basil | Cooksville |
| Dufferin Peel Catholic District School Board, St. Bernadette Elementary | Mississauga |
| Dufferin Peel Catholic District School Board, St. John XXIII Catholic Elementary | Mississauga |
| Dufferin Peel Catholic District School Board, St. Joseph Brampton Elementary | Brampton |
| Dufferin Peel Catholic District School Board, St. Jude Separate School | Mississauga |
| Dufferin Peel Catholic District School Board, St. Lucy Catholic Elementary | Brampton |
| Dufferin Peel Catholic District School Board,St. Marguerite Bourgeoys | Brampton (City of) |
| Dufferin Peel Catholic District School Board,St. Teresa of Calcutta Catholic Elementary School | Cooksville |
| Dufferin Peel Catholic School Board - Father Clair Tripping School | Brampton |
| Dufferin Peel Catholic School Board- Metropolitan Andrei Separate School | Cooksville |
| Dufferin Peel Catholic School Board- St. Anthony | Brampton (City of) |
| Dufferin Peel Catholic School Board, Cardinal Newman | Brampton (City of) |
| Dufferin Peel Catholic School Board, St. Herbert | Mississauga |
| Dufferin Peel District School Board, Our Lady of Good Voyage | Streetsville |
| Dufferin Peel District School Board, Saint Bernadette | Cooksville |
| Dufferin Peel District School Board, St. Clare | Erin Mills |
| Dufferin Peel District School Board, St. Edmund | Mississauga |
| Dufferin-Peel Catholic District School Board | Mississauga |
| Dufferin-Peel Catholic District School Board, Bishop Francis Allen School | Brampton |
| Dufferin-Peel Catholic District School Board, Brampton Schools | Brampton |
| Dufferin-Peel Catholic District School Board, Father Daniel Zanon | Mississauga |
| Dufferin-Peel Catholic District School Board, Guardian Angels Elementary School | Brampton |
| Dufferin-Peel Catholic District School Board, Holy Cross Catholic School | Malton |
| Dufferin-Peel Catholic District School Board, Holy Spirit Elementary School | Brampton |
| Dufferin-Peel Catholic District School Board, Mississauga Schools | Mississauga |
| Dufferin-Peel Catholic District School Board, Our Lady of Lourdes Catholic Elementary School | Brampton |
| Dufferin-Peel Catholic District School Board, Queen of Heaven Elementary School | Port Credit |
| Dufferin-Peel Catholic District School Board, Sacred Heart Elementary School | Brampton |
| Dufferin-Peel Catholic District School Board, San Lorenzo Ruiz Elementary School | Mississauga |
| Dufferin-Peel Catholic District School Board, St. Aidan Catholic Elementary School | Brampton |
| Dufferin-Peel Catholic District School Board, St. Alfred Separate School | Cooksville |
| Dufferin-Peel Catholic District School Board, St. Anne Elementary School | Brampton |
| Dufferin-Peel Catholic District School Board, St. Anthony Elementary School | Brampton |
| Dufferin-Peel Catholic District School Board, St. Bernard of Clairvaux Catholic Elementary School | Streetsville |
| Dufferin-Peel Catholic District School Board, St. Brigid Catholic School | Bramalea |
| Dufferin-Peel Catholic District School Board, St. Catherine of Siena Seperate School | Cooksville |
| Dufferin-Peel Catholic District School Board, St. Cecilia Elementary School | Brampton |
| Dufferin-Peel Catholic District School Board, St. Cornelius Elementary School | Caledon |
| Dufferin-Peel Catholic District School Board, St. Dominic Seperate School | Mississauga |
| Dufferin-Peel Catholic District School Board, St. Elizabeth Seton School | Mississauga |
| Dufferin-Peel Catholic District School Board, St. Faustina Elementary School | Mississauga |
| Dufferin-Peel Catholic District School Board, St. Gerard Seperate School | Mississauga |
| Dufferin-Peel Catholic District School Board, St. James Catholic Global Learning Centre | Mississauga |
| Dufferin-Peel Catholic District School Board, St. Jean-Marie Vianney Catholic Elementary School | Brampton |
| Dufferin-Peel Catholic District School Board, St. Joachim Elementary School | Brampton |
| Dufferin-Peel Catholic District School Board, St. John Fisher Elementary School | Brampton |
| Dufferin-Peel Catholic District School Board, St. John the Baptist Elementary School | Bolton |
| Dufferin-Peel Catholic District School Board, St. John XXIII Catholic Elementary School | Mississauga |
| Dufferin-Peel Catholic District School Board, St. Joseph's Elementary | Mississauga |
| Dufferin-Peel Catholic District School Board, St. Leonard Elementary School | Brampton |
| Dufferin-Peel Catholic District School Board, St. Louis Separate School | Clarkson |
| Dufferin-Peel Catholic District School Board, St. Luke Elementary | Mississauga |
| Dufferin-Peel Catholic District School Board, St. Margaret of Scotland Elementary | Mississauga |
| Dufferin-Peel Catholic District School Board, St. Mary Elementary School | Brampton |
| Dufferin-Peel Catholic District School Board, St. Monica Elementary | Brampton |
| Dufferin-Peel Catholic District School Board, St. Pio of Petrelcina Elementary School | Cooksville |
| Dufferin-Peel Catholic District School Board, St. Raymond's Elementary School | Mississauga |
| Dufferin-Peel Catholic District School Board, St. Rita Elementary | Brampton |
| Dufferin-Peel Catholic District School Board, St. Teresa of Avila Elementary | Mississauga |
| Dufferin-Peel Catholic District School Board, St. Timothy Elementary School | Mississauga |
| Dufferin-Peel Catholic District School Board, St. Ursula Elementary | Brampton |
| Dufferin-Peel Catholic District School Board, St. Valentine | Streetsville |
| Dufferin-Peel Catholic District School Board, St. Vincent De Paul | Mississauga |
| Dufferin-Peel Catholic District School Board, Sts. Peter & Paul Elementary | Mississauga |
| Dufferin-Peel Catholic District School Board, Venerable Michael J. McGivney Elementary | Brampton |
| Dufferin-Peel Skating Club | Caledon |
| Dukh Bhanjan | Brampton |
| Dundas Clinical Pharmacy | Mississauga |
| Dundas Kipling Pharmacy | Etobicoke |
| Dundas Medical Centre | Mississauga |
| Dundas Pharmacy | Mississauga |
| Dynacare, Bolton | Bolton |
| Dynacare, Brampton - 7700 Hurontario St | Brampton |
| Dynacare, Brampton - Cottrelle Blvd | Brampton |
| Dynacare, Brampton - Head Office | Brampton |
| Dynacare, Brampton - Mississauga Rd | Brampton |
| Dynacare, Credit Valley Rd | Mississauga |
| Dynacare, Etobicoke - Albion Rd | Etobicoke North |
| Dynacare, Etobicoke - Humber College Blvd | Etobicoke North |
| Dynacare, King St W | Mississauga |
| Dynacare, Mississauga - Goreway | Malton |
| Dynacare, Queensway W | Mississauga |
| Dynamic Chiropractic Health and Wellness Centre | Mississauga (City of) |