| | Organization Name(s) | Located In |
 | D.A. Gordon Public School, LAMBTON KENT DISTRICT SCHOOL BOARD, Wallaceburg | Wallaceburg |
 | D.A.M Good Stuff New and Gently Used Apparels, Dependable, Affordable, Merchandise | Essex |
| | D.M. McEachen Safety Consulting | Point Edward |
 | Dale Brain Injury Services | London |
 | Dale Brain Injury Services, Assisted Living Services | London |
 | Dale Brain Injury Services, Assisted Living Services, 570 Nelson St | London |
 | Dale Brain Injury Services, Cornerstone Clubhouse | London |
 | Dale Brain Injury Services, Counselling and Consultation | London |
 | Dale Brain Injury Services, Outreach Services | London |
 | Dalios Denture and Hearing Clinic | Chatham |
 | Dante Club | Sarnia |
 | D'Arcy Lane Institute/Dal School of Equine Massage Therapy | London |
 | Darrel S Moffat Memorial Church, Tilbury - Quinn Pastoral Charge | Tilbury |
 | Darrel S Moffat United Church Women Group, Tilbury | Tilbury |
 | Dawn-Euphemia (Corporation of the Township of) | Dresden |
| | Dawn-Euphemia. Mayor | Dresden |
| | Dawn-Euphemia. Municipal Office | Dresden |
 | Daya Counselling Centre | London |
 | Daya Counselling Centre, Bereavement Education | London |
 | Daya Counselling Centre, Counselling Services | London |
 | Dayspring Church of Windsor | Windsor Central |
 | Dayspring Residence Retirement Home, Respite Services | Tillsonburg |
 | Daystar Community Homes | Woodstock |
 | Dealing With Aging Parents Support Group, CHAP Program, Family Service Kent | Chatham-Kent |
 | Dearness Home | London |
 | Dearness Home, Adult Day Program and Wellness Centre | London |
 | Dearness Home, Homemaking Program | London |
 | Dearness Home, Short Stay Beds | London |
 | Delaware Lions Non-Profit Apartment Corporation | Delaware |
 | Delta Chi Cosmopolitan Kids, Hospital Campus | Windsor Central |
| | Deputy Chief - Mike Cummings | Oil Springs |
 | Dereham Forge Housing Co-Operative | Tillsonburg |
| | Detroit River Canadian Cleanup | Essex |
 | Detroit-Windsor Tunnel | Windsor |
| | Developmental Services Ontario (DSO) South West Region | Sarnia |
 | Devine Street Gospel Chapel | Sarnia |
 | Devonshire Mall | Windsor Central |
 | Devonwood Community Church of the Nazarene | Windsor West |
| | Diane Barry, RPN - Private Duty Nurse, Lice Treatments | Leamington |
 | Diane Zeeuw's Place | Sarnia |
 | Dianne Edmunds School of Dance, Tilbury | Tilbury |
 | Digital Friends Inc. | Sarnia |
 | Diocese of London, Refugee Ministry of Private Sponsorship | Windsor West |
 | Discovery School Based Childcare Program, Kingsville, Childcare and Latchkey Program, St John de Brebeuf Elementary School | Kingsville |
 | Discovery School Based Childcare Program, Kingsville, Childcare Program, Kingsville Elementary School | Kingsville |
 | Discovery School Based Childcare Program, Kingsville, Childcare/Latchkey Program, Jack Miner Elementary School | Kingsville |
 | Discovery School Based Childcare Program, Kingsville, Early Years Enrichment Program, Kingsville Branch | Kingsville |
 | Discovery School Based Childcare Program, Kingsville, Latchkey Program, Queen Elizabeth Elementary School | Leamington |
| | Distress Centre of Windsor-Essex County | Windsor Central |
| | DMI Professional Building | Point Edward |
| | Do What You Can | Toronto |
 | Doctors Walk-In Medical Clinic (The) | London |
 | Domestic Abuse Services Oxford, Abused Women's Crisis Line | Woodstock |
 | Domestic Abuse Services Oxford, Community Counselling and Support Group | Woodstock |
 | Domestic Abuse Services Oxford, Journeys Children's and Mother's Group | Woodstock |
 | Domestic Abuse Services Oxford, Sexual Assault/Abuse Counselling | Woodstock |
 | Domestic Abuse Services Oxford, Shelter Services | Woodstock |
 | Domestic Abuse Services Oxford, Transitional and Housing Support Program | Woodstock |
| | Don Bruder, Administrator-Treasurer, Warwick Township | Watford |
 | Dorchester Cooperative Nursery School | Dorchester |
 | Douglas & Kozera Excavating & Environmental | Dresden |
 | Dover Rod and Gun Club | Chatham-Kent |
 | Down Syndrome Association of Lambton County | Point Edward |
 | Downtown London | London |
 | Downtown Mission of Windsor Inc | Windsor Central |
 | Downtown Mission of Windsor Inc, Basic Needs Services | Windsor Central |
 | Downtown Mission of Windsor Inc, Emergency Clothing Bank | Windsor Central |
 | Downtown Mission of Windsor Inc, Employment Skills Training, Culinary Assistant Program | Windsor Central |
 | Downtown Mission of Windsor Inc, Food Bank | Windsor Central |
 | Downtown Mission of Windsor Inc, Holiday Programs | Windsor Central |
 | Downtown Mission of Windsor Inc, Income Tax Clinic | Windsor Central |
 | Downtown Mission of Windsor Inc, The Sanctuary | Windsor Central |
 | Downtown Windsor Business Accelerator | Windsor Central |
 | Downtown Windsor Business Improvement Association | Windsor Central |
 | Downtown Windsor Business Improvement Association, Winter Fest | Windsor Central |
 | Downtown Windsor Community Collaborative, Men's Community Housing | Windsor |
 | Downtown Windsor Community Collaborative, Women's Community House | Windsor |
 | Downtown Windsor Farmers' Market | Windsor Central |
 | Dr Henry J Svec, Institute of Psychological Services, Chatham | Chatham |
 | Dream Costumes | Chatham |
 | Dresden Agricultural Society | Dresden |
 | Dresden Area Central School, LAMBTON KENT DISTRICT SCHOOL BOARD | Dresden |
 | Dresden Business Improvement Association | Dresden |
 | Dresden Christian Reformed Church, Dresden | Dresden |
 | Dresden Community Church | Dresden |
 | Dresden Elderkings | Dresden |
| | Dresden Horticultural Society | Dresden |
 | Dresden Junior Kings | Dresden |
 | Dresden Marina and Parks | Dresden |
 | Dresden Raceway | Dresden |
 | Dresden Sidestreets Youth Centre | Dresden |
 | Dresden Skating Club | Dresden |
 | Dresden United Church, Pastoral Charge: Dawn Valley & Rutherford | Dresden |
 | Dresden.ca | Dresden |
 | Drive Test, Windsor and District | Windsor Central |
 | Drive Test Centre, Chatham-Kent, Driver Examination - Testing and Road Testing Appointments | Chatham |
 | Driver and Vehicle License Office, MTO | Chatham |
 | Drive-U | Dorchester |
 | Drouillard Place | Windsor East |
 | Drouillard Place, Emergency Aid, Food Bank | Windsor East |
 | Drouillard Place, Food Cooperative | Windsor East |
 | Drouillard Place, Holiday Programs | Windsor East |
 | Drouillard Place, Youth Programs | Windsor East |
 | Drouillard Place, Youth Programs, Drouillard Place Teen Centre | Windsor East |
 | Drouillard Place, Youth Programs, Grandview Youth Centre | Windsor East |
| | Drug and Alcohol Treatment Registry, Problem Gambling Helpline - OPGH, Mental Health Service Information Ontario | Ontario |
| | Drug Basics Pharmacy-Sarnia | Sarnia |
| | DRUGStore Pharmacy-Sarnia | Sarnia |
 | Drumbo Opportunity Centre | Drumbo |
 | Ducks Unlimited Canada, Erie St Clair Chapter (Chatham - Kent) | Chatham-Kent |
 | Dunamis Church | Sarnia |
| | Duncan McTavish, Administrator-Clerk, Enniskillen | Petrolia |
 | Dundas Street Centre United Church | London |
 | Dundas Street Centre United Church, Good Samaritan Cupboard | London |
 | Dundas Street Centre United Church, Out-of-the-Cold Hospitality Meal | London |
 | Dunlop United Church | Sarnia |
 | Dutch Canadian Society of London and District | London |
 | Dutton and District Lions Non-Profit Housing - Caledonia Gardens | Dutton-Dunwich |
 | Dutton and District Lions Non-Profit Housing - Caledonia Two | Dutton-Dunwich |
 | Dutton Dunwich Seniors' Centre | Dutton-Dunwich |
 | Dutton-Dunwich Community Centre | Dutton-Dunwich |
 | Dutton-Dunwich, Municipality of | Dutton-Dunwich |