| | Organization Name(s) | Located In |
 | A A Wright Public School, LAMBTON KENT DISTRICT SCHOOL BOARD, Wallaceburg | Wallaceburg |
 | A Book of My Own Literacy Campaign | Windsor |
 | A F of L Carpenters and Joiners, Local 1256 | Sarnia |
 | A Life Worth Living | Windsor East |
 | A Place to Grow, St Christopher Site | Windsor Central |
| | A Safe Passage | London |
 | A Smart Start Day Care | Tecumseh (Town of) |
| | AAA Alcoholics Anonymous, District 14-Area 86 | Sarnia |
 | Aamjiwnaang Day Nursery | Sarnia |
 | Aamjiwnaang First Nation, Alternative and Continuing Education Program, Literacy and Basic Skills | Sarnia |
| | Aamjiwnaang First Nation, Chippewas of Sarnia | Sarnia |
 | Aamjiwnaang First Nation, Chippewas of Sarnia, Community Health Centre | Lambton County |
 | Aamjiwnaang First Nation, Employment and Training Programs and Services | Sarnia |
 | Aamjiwnaang First Nation, Employment Resource Centre | Sarnia |
 | ABC Child Care Centre | Sarnia |
 | ABC Day Nursery of Windsor, Arthur | Windsor East |
 | ABC Day Nursery of Windsor, Hanna St | Windsor Central |
 | ABC Day Nursery of Windsor, Lauzon Road | Windsor East |
 | ABC Day Nursery of Windsor, Somme St | Windsor East |
 | Aboriginal Child Resource Centre | Windsor Central |
 | Aboutown Transportation - Accessible Taxi-Cab Service | London |
 | Académie Ste Cécile International School | Windsor South |
 | Academy of Learning, Chatham | Chatham |
 | Access Centre for Regulated Employment | London |
| | Accessibility Centre-Lambton College of Applied Arts and Technology | Sarnia |
 | Acorn Christian Day Care | London |
 | Across Languages Translation and Interpretation | London |
 | Active Lifestyle Centre | Chatham |
 | ActivEars Hearing Centres | Sarnia |
 | Actors Theatre of Windsor | Windsor Central |
 | Acupuncture and Traditional Chinese Medicine | Sarnia |
| | Advocacy Centre for Tenants Ontario | Toronto Central |
 | Adam Oliver Housing Co-Operative (Inc) | Ingersoll |
| | Addiction Services Bluewater Health | Sarnia |
 | Addiction Services of Thames Valley | London |
 | Addiction Services of Thames Valley, Back On Track Program | London |
 | Addiction Services of Thames Valley, Fresh Start Program | London |
 | Addiction Services of Thames Valley, Heartspace Program | London |
 | Addiction Services of Thames Valley, London CAReS | London |
 | Addiction Services of Thames Valley, Problem Gambling Services - Assessment | London |
 | Addiction Services of Thames Valley, Problem Gambling Services - Treatment | London |
 | Addiction Services of Thames Valley, St Thomas Office | St Thomas |
 | Addiction Services of Thames Valley, Strathroy Office | Strathroy |
 | Addiction Services of Thames Valley, Strathroy Office, Problem Gambling Services - Assessment | Strathroy |
 | Addiction Services of Thames Valley, Strathroy Office, Problem Gambling Services - Treatment | Strathroy |
 | Addiction Services of Thames Valley, Strathroy Office, Substance Abuse Services - Assessment | Strathroy |
 | Addiction Services of Thames Valley, Strathroy Office, Substance Abuse Services - Treatment | Strathroy |
 | Addiction Services of Thames Valley, Substance Abuse Services - Assessment | London |
 | Addiction Services of Thames Valley, Substance Abuse Services - Treatment | London |
 | Addiction Services of Thames Valley, Supportive Housing for Addictions | London |
 | Addiction Services of Thames Valley, Walk-in Intake for Substance Abuse Concerns | London |
| | Addictions Assistance Line (AAL), Detox Bed Referrals, Municipality of Chatham-Kent, Hotline | Chatham-Kent |
 | Adelaide Medical Centre | London |
 | Adelaide Metcalfe, Municipality of | Strathroy |
 | Adelaide Metcalfe, Municipality of, Kerwood Fire Station | Adelaide |
| | Adoption Basics | Kingsville |
| | Adoption Council of Canada | Ottawa |
 | Adoption Records, Chatham-Kent Ontario | Chatham |
| | Adoption Roots and Rights | Dorchester |
| | Adoption Services | Windsor East |
| | Adoption Services, Adoption Assessment and Placement - Adoptive Families | Windsor Central |
| | Adoption Services, Adoption Counselling - Birth Parents Program | Windsor Central |
| | Adoption Services, Matched Parties - Adoption Services | Windsor Central |
| | Adult Day Program, Victorian Order of Nurses Sarnia-Lambton | Sarnia |
| | Adult Enrichment Centre, Lambton Meadowview Villa | Petrolia |
| | Adult Enrichment Centre, Marshall Gowland Centre | Sarnia |
 | Adult Language and Learning, Chatham | Chatham |
 | Adult Learning Centre, Literacy and Basic Skills, Chatham | Chatham |
 | Adult Learning Centre, Literacy and Basic Skills, Wallaceburg | Wallaceburg |
 | Adult Probation Services | Sarnia |
 | Adventure Hours Nursery School, Chatham | Chatham |
 | Advocacy and Protective Services Program, Family Service Kent | Chatham |
| | Advocates for the Underdog | Windsor |
| | Advocis, Windsor Chapter | Windsor |
 | African Community Council (ACC) | London |
| | African Community Organization of Windsor | Windsor East |
 | African Organization of London-Middlesex | London |
 | Afton Park Place Long Term Care Community | Sarnia |
 | Afton Park Place Long Term Care Community | Sarnia |
 | Agathe T Chretien R.M.T | Tilbury |
 | Agricultural Workers Alliance, Leamington | Leamington |
| | Ahavas Isaac Synagogue | Sarnia |
 | Ahcom Shrine Club, Branch of Mocha in London, Chatham | Chatham |
| | AIDS and Sexual Health Information Line | Toronto |
 | AIDS Committee of Windsor | Windsor Central |
 | AIDS Committee of Windsor, Education and Prevention Services | Windsor Central |
 | AIDS Committee of Windsor, Harm Reduction Services | Windsor Central |
 | AIDS Committee of Windsor, Periodic Health Assessment (PHA) Services | Windsor Central |
 | AIDS Committee of Windsor, Youth Services | Windsor Central |
 | AIDS Support Chatham-Kent | Chatham |
 | Ailsa Craig and Area Food Bank | Ailsa Craig |
 | Ailsa Craig And District Co-operative Playschool | Ailsa Craig |
 | AIM Health Group - Medical Centre | London |
 | AIM Health Group - Medical Clinic | London |
 | AIM Health Group - Medical Clinic | London |
 | Air Cadet League of Canada, National Headquarters | Ontario |
| | Airport Shuttles, Essex County | Essex County |
 | AKO Fraternity | Windsor East |
 | Al-anon and Alateen, Tilbury | Tilbury |
| | Al-Anon Family Group - London | London |
| | Al-Anon Family Group - London, Alateen | London |
 | Al-Anon Information Services | Sarnia |
| | Al-Anon/Alateen Family Groups, Windsor and Essex County | Tecumseh (Town of) |
 | Al-Anon/Alateen Family Groups - Ridgetown, District 9, Chatham-Kent | Ridgetown |
| | Albany Community Living Centre | Petrolia |
 | Albany Retirement Village | Petrolia |
 | Alcoholics Anonymous, Blenheim | Blenheim |
| | Alcoholics Anonymous, Chatham-Kent District 15, Area 86 | Chatham |
| | Alcoholics Anonymous, Windsor-Essex District 16 | Windsor |
 | Alcoholics Anonymous - London Intergroup Services Office | London |
| | Alcoholics Anonymous for Oxford County - Oxford 22 | Woodstock |
 | Alexander Mackenzie Housing Co-Op | Sarnia |
| | Alexander MacKenzie Secondary School. Alexander MacKenzie Café, No.111 | Sarnia |
 | Alexander's Day Care Center | Windsor East |
 | Alexandra Hospital (The) | Ingersoll |
 | Alexandra Hospital (The), Alexandra Hospital Foundation | Ingersoll |
| | Algonquin Club (The) | Windsor |
| | Alhambra, International Order of The | Ontario |
 | Alice Saddy Association | London |
 | Alive! Canada | Windsor Central |
 | All Saints' Anglican Church | Windsor Central |
 | All Saints' Anglican Church, Clothing Cupboard | Windsor Central |
 | All Saints' Anglican Church, Corunna Parish | Corunna |
 | All Saints' Anglican Church, Skate Lending Program | Windsor Central |
 | All Saints' Anglican Church - Sarnia | Sarnia |
 | All Saints Church - Community Breakfast | London |
 | Allen Professional Search/The People Bank, Tillsonburg | Tillsonburg |
 | Allen Professional Search/The People Bank, Woodstock | Woodstock |
 | Allergy Asthma Information Association, Chatham | Chatham |
 | Allergy Wellness Centre, Amherstburg Office | Amherstburg |
 | Alphabet Community Centre - SW Advocates for Trans (SWAT) | London |
 | AlphaLogic Career College | London |
 | Alternative Access and Mobility | London |
 | Alternative and Continuing Education Centre, Sarnia Site, Literacy and Basic Skills | Sarnia |
| | Alternative Birth and Parenting | Windsor |
 | Alvinston Medical Centre | Alvinston |
 | Alzheimer Outreach Services of McCormick Home | London |
 | Alzheimer Outreach Services of McCormick Home, Adult Day Program | London |
 | Alzheimer Outreach Services of McCormick Home, Adult Day Program - Overnight Respite | London |
 | Alzheimer Outreach Services of McCormick Home, Family Support Services | London |
 | Alzheimer Society London and Middlesex | London |
 | Alzheimer Society London and Middlesex, First Link First Nations Program | London |
 | Alzheimer Society London and Middlesex, First Link Learning Series | London |
 | Alzheimer Society London and Middlesex, First Link Memory Screening | London |
 | Alzheimer Society London and Middlesex, First Link Social Recreation and Volunteer Companion Services | London |
 | Alzheimer Society London and Middlesex, First Link Social Work Support | London |
 | Alzheimer Society London and Middlesex, Public Education Programs | London |
 | Alzheimer Society London and Middlesex, Safely Home - Alzheimer Wandering Registry | London |
 | Alzheimer Society of Chatham-Kent | Chatham |
 | Alzheimer Society of Chatham-Kent, Day Program | Chatham |
 | Alzheimer Society of Elgin-St Thomas | St Thomas |
 | Alzheimer Society of Elgin-St Thomas, Caregiver Support Groups | St Thomas |
 | Alzheimer Society of Elgin-St Thomas, Early Stage Support Group | St Thomas |
 | Alzheimer Society of Elgin-St Thomas, Education Programs | St Thomas |
 | Alzheimer Society of Elgin-St Thomas, First Link | St Thomas |
 | Alzheimer Society of Elgin-St Thomas, Safely Home - Alzheimer Wandering Registry | St Thomas |
 | Alzheimer Society of Oxford | Woodstock |
 | Alzheimer Society of Oxford, Alzheimer Programs for Children and Youth | Woodstock |
 | Alzheimer Society of Sarnia Lambton | Sarnia |
 | Alzheimer Society of Windsor and Essex County | Windsor East |
 | Alzheimer Society of Windsor and Essex County, Caregiver Education Services | Windsor East |
 | Alzheimer Society of Windsor and Essex County, Caregiver Support Groups | Windsor East |
 | Alzheimer Society of Windsor and Essex County, Caregiver Support Services | Windsor East |
 | Alzheimer Society of Windsor and Essex County, Day Away Program | Windsor East |
 | Alzheimer Society of Windsor and Essex County, Dementia Education | Windsor East |
 | Alzheimer Society of Windsor and Essex County, In-Home Respite Program | Windsor East |
| | Alzheimer Society Sarnia-Lambton | Sarnia |
 | Amalgamated Transit Union, Local 616 | Windsor East |
 | Ambassador Baptist Church | Windsor West |
 | Ambassador Baptist Church, Emergency Food Bank | Windsor West |
| | Ambassador Bridge | Windsor |
| | Ambassador Horticultural Society, LaSalle | LaSalle |
 | Ambassador Place | Watford |
 | AMEC Earth& Environmental | Sarnia |
 | Amethyst School | London |
 | Amherstburg Chamber of Commerce | Amherstburg |
 | Amherstburg Community Church | Amherstburg |
 | Amherstburg Community Services | Amherstburg |
 | Amherstburg Community Services, Amherstburg Food Bank Referral | Amherstburg (Town of) |
 | Amherstburg Community Services, Amherstburg Food Bank Referral, Holiday Programs | Amherstburg (Town of) |
 | Amherstburg Community Services, Care-A-Van | Amherstburg |
 | Amherstburg Community Services, Coats for Kids Program | Amherstburg |
 | Amherstburg Community Services, Community Information Service | Amherstburg |
 | Amherstburg Community Services, Income Tax Clinic | Amherstburg |
 | Amherstburg Community Services, LEAP Emergency Financial Assistance | Amherstburg |
 | Amherstburg Community Services, Meals on Wheels | Amherstburg |
 | Amherstburg Community Services, Meals on Wheels, Harrow & McGregor | Amherstburg |
 | Amherstburg Community Services, Meals on Wheels, Lasalle | Amherstburg |
 | Amherstburg Community Services, Mini Van | Amherstburg |
 | Amherstburg Community Services, Security Reassurance Program | Amherstburg |
| | Amherstburg Echo (The) | Amherstburg |
 | Amherstburg Family Health Team | Amherstburg |
 | Amherstburg Farmers Market | Amherstburg |
 | Amherstburg Firefighters Association | Amherstburg |
 | Amherstburg Food & Fellowship Mission | Amherstburg (Town of) |
 | Amherstburg Food & Fellowship Mission, Food Bank | Amherstburg |
 | Amherstburg Food & Fellowship Mission, Holiday Programs | Amherstburg |
 | Amherstburg Historic Sites Association | Amherstburg (Town of) |
 | Amherstburg Medical Associates and Walk-In Clinic (The) | Amherstburg (Town of) |
| | Amherstburg Minor Baseball Association | Amherstburg |
 | Amherstburg Minor Hockey Association | Amherstburg |
| | Amherstburg Minor Soccer Association | Amherstburg |
 | Amherstburg Senior Mens Hockey League, Big Creek Hockey League | Amherstburg (Town of) |
 | Amherstburg Vision Centre | Amherstburg (Town of) |
 | Amherstburg. Fire and Rescue | Amherstburg (Town of) |
 | Amherstburg. Heritage Committee | Amherstburg (Town of) |
 | Amherstburg. Municipal Office | Amherstburg |
| | Amherstburg. Municipal Office, Marraige Licence Department | Amherstburg |
| | Amherstburg. Parks and Recreation, Anderdon Park | Amherstburg (Town of) |
 | Amherstburg. Parks and Recreation, Angstrom Park | Amherstburg |
 | Amherstburg. Parks and Recreation, Bar Point Park | Amherstburg |
 | Amherstburg. Parks and Recreation, Bill Wigle Park | Amherstburg (Town of) |
 | Amherstburg. Parks and Recreation, Briar Ridge Park | Amherstburg (Town of) |
 | Amherstburg. Parks and Recreation, H Murray Smith Centennial Park, S Ralph McCurdy Track Complex | Amherstburg (Town of) |
 | Amherstburg. Parks and Recreation, Jack Purdie Park | Amherstburg |
 | Amherstburg. Parks and Recreation, King's Navy Yard Park | Amherstburg |
 | Amherstburg. Parks and Recreation, Larry Bauer Memorial Sports Complex | Amherstburg |
 | Amherstburg. Parks and Recreation, Leo N J Beaudoin, Beaudoin Park | Amherstburg |
 | Amherstburg. Parks and Recreation, Malden Centre Park | Amherstburg |
 | Amherstburg. Parks and Recreation, Ranta Park | Amherstburg (Town of) |
| | Amherstburg. Parks and Recreation, Scodeller Park | Amherstburg |
 | Amherstburg. Parks and Recreation, Seagram Park | Amherstburg (Town of) |
 | Amherstburg. Parks and Recreation, Swimming Pools, Lions Pool | Amherstburg (Town of) |
 | Amherstburg. Parks and Recreation, Toddy Jones Park | Amherstburg (Town of) |
 | Amherstburg. Parks and Recreation, Toddy Jones Park, Splash Pad | Amherstburg (Town of) |
 | Amherstburg. Parks and Recreation, Warren Mickle Park | Amherstburg |
 | Amherstburg. Police Services | Amherstburg (Town of) |
 | Amherstburg. Town Councillors | Amherstburg |
 | Amherstburg. Visitors Information Centre | Amherstburg |
 | Amica at London | London |
 | Amjiwnaang Binoojiinyag Kino Maagewgamgoons, Amjiwnaang Child Care | Sarnia |
| | Amnesty International, Windsor, Group 22 | Windsor Central |
| | Amyotrophic Lateral Sclerosis Society, Windsor-Essex County and Chatham-Kent | Amherstburg (Town of) |
 | Amyotrophic Lateral Sclerosis Society of Ontario - London Chapter | London |
 | Amy's Helping Hands | Tecumseh |
 | Anago (Non) Residential Resources Inc | London |
 | Anago (Non) Residential Resources Inc, Developmental Services | London |
 | Anago (Non) Residential Resources Inc, Outreach Programs | London |
 | Anago (Non) Residential Resources Inc, Youth Services | London |
 | Andover Gardens Senior Apartments | London |
| | Andrew's Seniors (The) | Sarnia |
| | Angel Care Home Visits | Sarnia |
 | Anglican Church of the Epiphany | Kingsville (Town of) |
 | Anglican Church Womens Group, Comber, Church of the Ascension, The Anglican Church of Canada | Comber |
 | Anglican Parish of the Transfiguration, St Stephen's - Thamesville; Christ Church - Dresden, Church of the Advent - Ridgetown; Church of the Redeemer - Highgate, St Matthew's - Florence; St John's - Aughrim | Thamesville |
 | Animal Control, Leamington and Kingsville | Kingsville |
 | Animal Farm | Sarnia |
 | Ann Street, County of Lambton. Housing Services Department, Forest | Forest |
 | Anna Moscardelli Advocacy and Paralegal Service | Sarnia |
 | Annetts & Associates | Chatham |
 | An-noor Islamic School, Elementary School | Windsor Central |
 | Antioch Christian Ministries | Essex |
 | Antony Ruddick Consulting - Rehabilitation Services | London |
 | Apostolic Christian Church, Nazareen | Harrow |
 | Applied Language Associates | London |
 | Arbour Glen Day Nursery | London |
 | Architectural Conservancy of Ontario - Chatham-Kent | Chatham |
| | ARE-U-READY, Adaptive Recreation Equipment | Woodstock |
| | Argentinian-Canadian Children's Foundation | Windsor Central |
 | Argyle Community Resource Centre | London |
 | Argyle Manor Non- Profit Housing Corporation | London |
| | Argyle Seniors Neighbourhood Advisory Committee | London |
 | Ark Aid Street Mission | London |
 | Arkona Baptist Church | Arkona |
 | Arkona Branch Radio | Arkona |
| | Arkona Community Centre | Arkona |
| | Arkona Lions Museum & Information Centre | Lambton County |
 | Arkona Lions Non-Profit Housing Inc., Orchard View Apartments, Tilley Homes | Arkona |
 | Arkona Medical Centre | Arkona |
 | Arkona Medical Centre Dispensary | Arkona |
| | Arkona Seniors Centre | Arkona |
| | ARMA Southwestern Ontario Chapter | Sarnia |
 | Army Cadet League of Canada, National Office | Ontario |
 | Art Gallery of Windsor | Windsor Central |
 | Art of Living Resource Centre Inc | Kingsville |
 | Artcite Inc | Windsor Central |
 | Arthritis Society (The) - South West Region | London |
 | Arthritis Society (The) - South West Region, Arthritis Education Programs | London |
 | Arthritis Society (The) - South West Region, Arthritis Rehabilitation and Education Program | London |
 | Arts Council - Windsor & Region | Windsor Central |
 | ARTspace, Art Gallery - Chatham-Kent | Chatham |
 | Arva's Little School House | London |
 | Ashwood Manor | London |
| | ASSIST, Putting Kids In Sports, Windsor & Essex County | Windsor |
 | Assisted Living Southwestern Ontario | Windsor West |
 | Assisted LIving Southwestern Ontario, Attendant Services, Outreach and Respite Programs | Windsor West |
 | Assisted Living Southwestern Ontario, Attendant Services, Supportive Housing, Outreach, Respite, Acquired Brain Injury Services | Windsor West |
 | Assisted Living Southwestern Ontario, Equal Ability, Employment Supports | Windsor West |
 | Assisted Living Southwestern Ontario, Participation Industries, Vocational Services | Windsor South |
 | Assisted Living Southwestern Ontario, Supportive Housing Program | Windsor East |
 | Assisted Living Southwestern Ontario, Supportive Housing Program, Acquired Brain Injury | Windsor West |
 | Association canadienne-française de l’Ontario - London-Sarnia Regional Council, Sarnia Location | Sarnia |
 | Association canadienne-française de l'Ontario - London-Sarnia Regional Council | London |
 | Association canadienne-française de l'Ontario - London-Sarnia Regional Council, Centre d'aide aux Victimes de Guerre et de Crime haineux (CAVIG)/Center for Survivors of War and Catastrophic Stress | London |
 | Association canadienne-française de l'Ontario - London-Sarnia Regional Council, Community Connections Mentorship Program | London |
 | Association of Iroquois and Allied Indians | Southwold |
| | Association of Women of India in Canada - London Chapter | London |
 | Association-canadienne française de l'Ontario, Régionale Windsor-Essex-Chatham-Kent | Windsor East |
 | Assumption University | Windsor West |
 | Assumption University Archives | Windsor West |
 | At Your Service for Seniors | London |
 | At^lohsa Native Family Healing Services | London |
 | At^lohsa Native Family Healing Services, Crisis Telephone Line | London |
 | At^lohsa Native Family Healing Services, Drop-In Centre | London |
 | At^lohsa Native Family Healing Services, Family Support Unit | London |
| | At^lohsa Native Family Healing Services, Southwold Satellite Office | Southwold |
 | At^lohsa Native Family Healing Services, Zhaawanong Shelter | London |
| | Athletic Club, Corunna Minor | Corunna |
 | ATN Access for Persons with Disabilities | London |
 | ATN Access for Persons with Disabilities, Braille Translation | London |
 | ATN Access for Persons with Disabilities, Computer Self Study | London |
 | ATN Access for Persons with Disabilities, General Educational Development | London |
 | ATN Access for Persons with Disabilities, Introduction to Computers/Computer Skills | London |
 | ATN Access for Persons with Disabilities, Learning Disabilities Assessment Services | London |
 | ATN Access for Persons with Disabilities, Outreach Program | London |
 | ATN Access for Persons with Disabilities, Skills for Employment | London |
 | ATN Access for Persons with Disabilities, Tanys Quesnel Living Learning Centre | London |
 | ATN Access for Persons with Disabilities, Technology and Computer Assisted Learning | London |
 | ATN Access for Persons with Disabilities, Workshops for Employers | London |
 | Audrey's Playground Daycare | Leamington |
 | Audrey's Wee Horizons Childcare | Leamington |
 | Ausable Community Centre | Lucan |
 | Ausable Port Franks Optimist Youth Drop In Centre | Port Franks |
| | Autism Ontario, Chatham-Kent Chapter | Chatham |
| | Autism Ontario, Sarnia-Lambton Chapter | Sarnia |
 | Autism Ontario, Windsor-Essex Chapter | Windsor East |
 | Autism Ontario - London Chapter | London |
 | Autism Services Inc, Windsor & Essex County | Windsor West |
 | Avondale Apartments, County of Lambton, Housing Services Department, Sarnia | Sarnia |
| | Awakening Potential | Chatham-Kent |
| | AYiAY | Amherstburg |
 | Aylmer Area Christian Community Association - Heritage Place | Aylmer |
 | Aylmer Community Services - Ontario Employment Services | Aylmer |
 | Aylmer Police | Aylmer |
 | Aylmer Ultrasound Service | Aylmer |
 | Aylmer, Town of | Aylmer |
| | Aylmer/Springfield Block Parent Program | Aylmer |