| | Organization Name(s) | Located In |
| | M & B Frozen Meal Program / Apetito | Windsor |
 | M.A.D.D. Chatham-Kent, Mothers Against Drunk Driving | Chatham |
 | Mac Computer Meetup | Sarnia |
 | MacDonald Naturopathic Clinic, Crista MacDonald-Werby, ND | Woodstock |
| | MADD, Windsor-Essex County Community Leader Group | Windsor |
 | MADD Canada - London Chapter | London |
 | MADD Canada - St Thomas Chapter | St Thomas |
 | Madonna House Lay Apostolate | Windsor Central |
 | Maidstone Bicentennial Museum | Lakeshore |
 | Major F A Tilston, V C Armoury and Police Training Centre | Windsor West |
 | Make-A-Wish - Southwestern Ontario Chapter | London |
 | Make-A-Wish Southwestern Ontario | London |
 | Malahide, Township of | Aylmer |
 | Malden Community and Cultural Centre, Malden Community Weekly Card Social | Amherstburg |
 | Maltese Canadian Club of London | London |
 | Mandaumin United Church, Wyoming | Wyoming |
| | Maple City Badminton Club | Chatham |
 | Maple City Baptist Church | Chatham |
 | Maple City Country Club, Chatham | Chatham |
 | Maple City Ice Crystals, Chatham | Chatham |
 | Maple City Retirement Residence, Chatham | Chatham |
 | Maple City Slo-pitch League, Chatham | Chatham |
 | Maple Dell Amish School | Norwich |
 | Maple Manor Nursing Home | Tillsonburg |
 | Maple View Terrace | London |
 | Maples Home For Seniors (The) | Tavistock |
 | Maplewood and Parkside Congregations of Jehovah Witnesses, Kingdom Hall, Chatham | Chatham |
 | Maranatha Christian Academy | Windsor South |
 | March of Dimes Canada, Chatham Office, Supportive Housing and Outreach Attendant Services | Chatham |
 | March of Dimes Canada, Sarnia Branch | Sarnia |
 | Marconi Club | London |
 | Market Square (The) | Windsor Central |
 | Marquis Retirement Apartments | Sarnia |
 | Marsh Collection Society (The) | Amherstburg (Town of) |
 | Marsh Street Baptist Church | Ridgetown |
 | Marshall Gowland Manor | Sarnia |
 | Marshall Gowland Manor Home for the Aged, County of Lambton | Sarnia |
| | Martial Arts | Sarnia |
 | Marvel Beauty Schools | London |
 | Mary McKenzie Evening Missionary Auxiliary, Valetta Presbyterian Church, Merlin | Tilbury |
| | Mary Vitali-Perrier - Occupational Therapy Services | London |
 | Maryvale Adolescent and Family Services | Windsor West |
 | Maryvale Adolescent and Family Services, Day Treatment Services | Windsor West |
 | Maryvale Adolescent and Family Services, Residential Services | Windsor West |
 | Maryvale Adolescent and Family Services, Rotary Home for Youth, Stabilization and Discharge Planning Program | Windsor West |
 | Masonic Kent Lodge, 274 AA FAM, Blenheim | Blenheim |
 | Masonic Lodge | Sarnia |
 | Masons, Century Lodge 4571, Merlin | Merlin |
 | Masons, Thamesville | Thamesville |
 | Masons Af & Am, Chatham Wellington Lodge, Masonic Temple | Chatham |
 | Masons Howard Lodge AF & AM, #391, Ridgetown | Ridgetown |
 | Masons Naphtali Lodge, Tilbury | Tilbury |
 | Masonville Manor | London |
| | Master Gardeners, Essex and Windsor | Essex |
| | Master Gardeners, Sarnia-Lambton | Sarnia |
 | Matthew House Windsor | Windsor Central |
| | Maud Rouleau Birth Doula Services | Woodstock |
| | Maxim Reporting Services | Point Edward |
 | Maxwell Park Place | Sarnia |
 | May Court Club Of London (The) - May Court Shop | London |
| | May Court Club of Windsor | Windsor East |
 | Mayasol Spanish Language Centre | London |
 | McCormick Home | London |
 | McCormick Home, Short Stay Beds | London |
 | McGarrell Place | London |
 | McGarrell Place , Short Stay Beds | London |
 | McGeachy Charitable Foundation, Chatham | Chatham |
 | McGregor Community Centre, Town of Essex | McGregor |
| | Mcgregor Minor Baseball | McGregor |
| | Mcgregor Youth Baseball | McGregor |
 | McKinlay Funeral Homes | Chatham |
| | McLaren Pharmacy | Watford |
| | McNaughton Ave Public School | Chatham |
 | McNaughton Avenue Public School, LAMBTON KENT DISTRICT SCHOOL BOARD | Chatham |
 | Meadow Brook Fellowship | Leamington (Town of) |
 | Meadow Park Chatham Inc, Chatham-Kent, Jarlette Health Services | Chatham |
 | Meadow Park Long Term Care | London |
 | Meadow Park Long Term Care, Interim Beds | London |
 | Meadowbrook Amish School | Norwich |
 | Meals on Wheels, Ridgetown Branch | Ridgetown |
 | Meals on Wheels Aylmer | Aylmer |
 | Meals on Wheels Chatham | Chatham |
 | Meals on Wheels Inc, Dresden Branch | Dresden |
 | Meals on Wheels London | London |
 | Meals on Wheels London, Frozen Meal Service | London |
 | Meals on Wheels London, Out for Lunch Bunch | London |
 | Meals on Wheels London, Standard Meal Program | London |
 | Meals on Wheels London, Volunteer Transportation | London |
| | Mechanical Contractors Association | Sarnia |
 | Medical Laboratories of Windsor, 13278 Tecumseh Rd E Branch | Tecumseh |
 | Medical Laboratories of Windsor, 700 Tecumseh Rd E Branch | Windsor Central |
 | Medical Laboratories of Windsor, Howard Ave Branch | Windsor Central |
 | Medical Laboratories of Windsor, Leamington Branch | Leamington |
 | Medical Laboratories of Windsor, Ouellette Ave Branch | Windsor Central |
| | Medical Motion | Sarnia |
 | Medical Walk-in Clinic, Dr Ranjit | Windsor South |
 | Medix School | London |
 | Medpoint Health Care Centre | London |
 | Medpoint Health Care Centre, Byron Children's Clinic | London |
 | Medpoint Health Care Centre, Women's Health Clinic of London | London |
 | Melady Funeral Home | Belle River (Town of) |
 | Melbourne Housing Corporation | Melbourne |
| | MeleKare | London |
| | Member of Federal Parliament. Bev Shipley, Lambton-Kent-Middlesex Riding | Wallaceburg |
| | Member of Federal Parliament. Patricia (Pat) Davidson, Sarnia-Lambton Riding | Sarnia |
| | Member of Provincial Parliment. Bob Bailey, Sarnia Riding | Sarnia |
| | Member of Provincial Parliment. Monte McNaughton, Lambton-Kent-Middlesex Riding | Wallaceburg |
 | Men United for God | Windsor Central |
 | Men United for God, Holiday Programs | Windsor Central |
 | Menno Lodge Aylmer Inc - Menno Lodge Apartments | Aylmer |
 | Mennonite Central Committee - Chatham-Kent, Information and Help Centre for Lambton and Chatham-Kent Community | Chatham-Kent |
 | Mennonite Community Services - Aylmer Resource Centre | Aylmer |
 | Mennonite Community Services - Family Education & Support Project of Aylmer | Aylmer |
 | Mental Health Connections | Windsor Central |
| | mentalhealth4kids | London |
| | Mercedes Benz Club | Sarnia |
| | Mercy Ministry Centre | Sarnia |
 | Meridian Hearing Centre | Sarnia |
 | Merlin & Area Kinsmen Club | Merlin |
| | Merlin Area Public School | Merlin |
 | Merlin Area Public School, LAMBTON KENT DISTRICT SCHOOL BOARD | Merlin |
 | Merlin Parks and Recreation | Merlin |
 | Merlin Senior Citizens Friendship Club | Merlin |
 | Merlin United Church | Merlin |
 | Merlin United Church Womens Group, Merlin | Merlin |
 | Merrymount Children's Centre, Oxford County Supervised Access Centre, Tillsonburg | Tillsonburg |
 | Merrymount Children's Centre, Oxford County Supervised Access Centre, Woodstock | Woodstock |
 | Merrymount Family Support and Crisis Centre | London |
 | Merrymount Family Support and Crisis Centre, All Kids Belong | London |
 | Merrymount Family Support and Crisis Centre, Children's Groups | London |
 | Merrymount Family Support and Crisis Centre, Community Outreach | London |
 | Merrymount Family Support and Crisis Centre, Crisis Residential/Respite Program | London |
 | Merrymount Family Support and Crisis Centre, Elgin Supervised Access Program | St Thomas |
 | Merrymount Family Support and Crisis Centre, London and Middlesex Supervised Access Program | London |
 | Merrymount Family Support and Crisis Centre, Parenting Groups | London |
 | Merrymount Family Support and Crisis Centre, Short-Term Licensed Child Care Program | London |
 | Mersea United Church | Wheatley |
 | Metcalfe Gardens Retirement Residence | St Thomas |
 | Metis Nation of Ontario, Aboriginal Healing and Wellness Strategy, Community Wellness Program | Windsor Central |
 | Metis Nation of Ontario, Windsor-Essex-Chatham-Kent Counties | Windsor Central |
 | Metis Nation of Ontario, Windsor-Essex-Chatham-Kent Counties, Healing and Wellness Services, Community Support Program | Windsor Central |
 | Metis Nation of Ontario, Windsor-Essex-Chatham-Kent Counties, Health Services, Aboriginal Healthy Babies, Healthy Children | Windsor Central |
| | Metro Pharmacy | Sarnia |
 | Metropolitan Community Church of Windsor | Windsor Central |
 | Metropolitan United Church - Hospitality Meal | London |
 | Middlesex Centre, Municipality of | Ilderton |
 | Middlesex Centre, Municipality of, Arva Fire Station | Arva |
 | Middlesex Centre, Municipality of, Bryanston Fire Station | |
 | Middlesex Centre, Municipality of, Coldstream Fire Station | |
 | Middlesex Centre, Municipality of, Delaware Fire Station | Delaware |
 | Middlesex Centre, Municipality of, Ilderton Fire Station | Ilderton |
 | Middlesex Community Living | Strathroy |
 | Middlesex County Library | London |
 | Middlesex County Library, Ailsa Craig Public Library | Ailsa Craig |
 | Middlesex County Library, Coldstream Public Library | Ilderton |
 | Middlesex County Library, Delaware Public Library | Delaware |
 | Middlesex County Library, Dorchester Public Library | Dorchester |
 | Middlesex County Library, Glencoe Public Library | Glencoe |
 | Middlesex County Library, Ilderton Public Library | Ilderton |
 | Middlesex County Library, Komoka Public Library | Komoka |
 | Middlesex County Library, Lucan Public Library | Lucan |
 | Middlesex County Library, Melbourne Public Library | Melbourne |
 | Middlesex County Library, Mount Brydges Public Library | Mount Brydges |
 | Middlesex County Library, Newbury Public Library | Newbury |
 | Middlesex County Library, Parkhill Public Library | Parkhill |
 | Middlesex County Library, Strathroy Public Library | Strathroy |
 | Middlesex County Library, Thorndale Public Library | Thorndale |
 | Middlesex County Library, Wardsville Public Library | Wardsville |
 | Middlesex Terrace | Delaware |
 | Middlesex Terrace, Short Stay Beds | Delaware |
 | Middlesex, County of | London |
 | Middlesex, County of, Middlesex Accessibility Advisory Committee | London |
 | Middlesex, County of, Social Services Department | London |
 | Middlesex-London Health Unit | London |
 | Middlesex-London Health Unit, Emergency Preparedness | London |
 | Middlesex-London Health Unit, Emergency Preparedness, Community Emergency Response Volunteers (CERV) | London |
 | Middlesex-London Health Unit, Environmental Health and Chronic Disease Prevention Services | London |
 | Middlesex-London Health Unit, Environmental Health and Chronic Disease Prevention Services, Child Safety | London |
 | Middlesex-London Health Unit, Environmental Health and Chronic Disease Prevention Services, Food and Nutrition | London |
 | Middlesex-London Health Unit, Environmental Health and Chronic Disease Prevention Services, Food Safety | London |
 | Middlesex-London Health Unit, Environmental Health and Chronic Disease Prevention Services, Healthy Weights | London |
 | Middlesex-London Health Unit, Environmental Health and Chronic Disease Prevention Services, Healthy Workplace Program | London |
 | Middlesex-London Health Unit, Environmental Health and Chronic Disease Prevention Services, Prevention | London |
 | Middlesex-London Health Unit, Environmental Health and Chronic Disease Prevention Services, Smoke Free Ontario and Tobacco Control | London |
 | Middlesex-London Health Unit, Environmental Health and Chronic Disease Prevention Services, Special Risk Citizens | London |
 | Middlesex-London Health Unit, Environmental Health and Chronic Disease Prevention Services, Water Quality | London |
 | Middlesex-London Health Unit, Family Health Services | London |
 | Middlesex-London Health Unit, Family Health Services, Blind Low Vision Early Intervention Program | London |
 | Middlesex-London Health Unit, Family Health Services, Community Developmental Screening Program | London |
 | Middlesex-London Health Unit, Family Health Services, Growth & Development - Is Your Baby Progressing | Strathroy |
 | Middlesex-London Health Unit, Family Health Services, Health Library | London |
 | Middlesex-London Health Unit, Family Health Services, Healthy Aging | London |
 | Middlesex-London Health Unit, Family Health Services, Healthy Babies Healthy Children | London |
 | Middlesex-London Health Unit, Family Health Services, Infant Hearing Program - Southwest Region | London |
 | Middlesex-London Health Unit, Family Health Services, InfantLine | London |
 | Middlesex-London Health Unit, Family Health Services, Let's Grow Free Parenting E-Newsletter | London |
 | Middlesex-London Health Unit, Family Health Services, Parenting Education Classes | London |
 | Middlesex-London Health Unit, Family Health Services, Pregnancy and Postpartum Mental Health and Wellbeing | London |
 | Middlesex-London Health Unit, Family Health Services, Prenatal Education Programs | London |
 | Middlesex-London Health Unit, Family Health Services, Public Health Dietitians | London |
 | Middlesex-London Health Unit, Family Health Services, Smart Start for Babies | London |
 | Middlesex-London Health Unit, Family Health Services, Well Baby, Child and Breastfeeding Clinics | London |
 | Middlesex-London Health Unit, Needle Exchange | London |
 | Middlesex-London Health Unit, Oral Health | London |
 | Middlesex-London Health Unit, Oral Health, Children In Need of Treatment (CINOT) Program | London |
 | Middlesex-London Health Unit, Oral Health, Healthy Smiles Ontario (HSO) Program | London |
 | Middlesex-London Health Unit, Oral Health, Communicable Disease and Sexual Health Services | London |
 | Middlesex-London Health Unit, Oral Health, Communicable Disease and Sexual Health Services, Birth Control Clinic - London | London |
 | Middlesex-London Health Unit, Oral Health, Communicable Disease and Sexual Health Services, Sexually Transmitted Infection (STI) Clinic - London | London |
 | Middlesex-London Health Unit, Oral Health, Communicable Disease and Sexual Health Services, Sexually Transmitted Infections (STI) Clinic - Strathroy | Strathroy |
 | Middlesex-London Health Unit, Oral Health, Communicable Disease and Sexual Health Services, The Immunization Clinic - London | London |
 | Middlesex-London Health Unit, Oral Health, Communicable Disease and Sexual Health Services, The Immunization Clinic - Strathroy | Strathroy |
 | Middlesex-London Health Unit, The Travel Immunization Clinic | London |
 | Middlesex-London in Motion | London |
| | Midvalley Apartments, County of Lambton. Housing Services Department, Petrolia | Petrolia |
| | Midwestern Ontario District of Optimist International Zone 1 | Oxford County |
| | Midwestern Ontario District of Optimist International Zone 4 | Oxford County |
 | Midwifery Services | Sarnia |
| | Midwifery Services of Lambton Kent | Sarnia |
 | Midwifery Services of Lambton-Kent | Chatham |
 | Miller Amish School | Norwich |
 | Mindaamin Area Scouting for Boys and Girls, Oxford & Norfolk | Woodstock |
| | Mind-Fit Stress Control Centre, Dr. George M. Delgrosso | Sarnia |
 | Mindful Birth Doula Services | London |
 | Ministry of Children and Youth Services, Juvenile Probation Services | Sarnia |
 | Ministry of Community and Social Services, Ontario Disability Support Program, Income and Employment Supports | Sarnia |
 | Ministry of Health and Long-Term Care, Nurse Practitioner-Led Clinics, Belle River, Victorian Order of Nurses | Lakeshore |
| | Ministry of Health and Long-Term Care, Nurse Practitioner-Led Clinics, Drouillard Road Outreach Site | Windsor |
 | Ministry of Health and Long-Term Care, Nurse Practitioner-Led Clinics, Essex County | Essex |
 | Ministry of Health and Long-Term Care, Nurse Practitioner-Led Clinics, Ingersoll | Ingersoll |
 | Ministry of Transportation, Windsor Border Initiatives Implementation Group, Rt. Hon. Herb Gray Parkway, Let’s Get Windsor-Essex Moving Strategy | Windsor West |
 | Minor Ball, Orford-Highgate | Highgate |
 | Minor Baseball Association, Sarnia Braves | Sarnia |
 | Miss Helen's Place | Sarnia |
 | Miss Helen's Place | Sarnia |
 | Mission Services of London | London |
 | Mission Services of London, Community Mental Health Programs | London |
 | Mission Services of London, Community Mental Health Programs, Crashbeds | London |
 | Mission Services of London, Community Mental Health Programs, Resource/Life Skills Centre | London |
 | Mission Services of London, Community Mental Health Programs, Streetscape | London |
 | Mission Services of London, Community Mental Health Programs, The Gathering Place | London |
 | Mission Services of London, Men's Mission and Rehabilitation Centre | London |
 | Mission Services of London, Mission Store (The) | London |
 | Mission Services of London, Quintin Warner House | London |
 | Mission Services of London, Quintin Warner House, Annex Program - 440 Maitland St | London |
 | Mission Services of London, Quintin Warner House, Assessment and Treatment | London |
 | Mission Services of London, Quintin Warner House, Relapse Prevention/Aftercare Program - 479 Maitland St | London |
 | Mission Services of London, Rotholme Women's and Family Shelter | London |
 | Mnaasged Child and Family Services, Delaware Site Office | Thamesville |
 | Molson Men's Touch Football | Sarnia |
| | Mom2Mom.ca, Lambton-Kent | Sombra |
| | Mom2mom.ca, Windsor Essex County, Parenting Support | Windsor South |
 | Montessori Academy of London - Casa Program, Oxford Central School | London |
 | Montessori Academy of London - Half-day Toddler and Casa Program, Westmount South School | London |
 | Montessori Academy of London - Toddler Central School | London |
 | Montessori School of Ingersoll | Ingersoll |
 | Montessori School of Windsor, Grand Marais | Windsor South |
 | Montessori School of Windsor, Labelle St | Windsor South |
 | Montessori the Place to Grow, Chatham | Chatham |
| | Mood Disorder Parent Support Group Oxford Region | Drumbo |
| | Moore Agricultural Society | Brigden |
| | Moore Campground - Seasonal | Lambton County |
| | Moore Lodge, County of Lambton. Housing Services Department. Corunna | Lambton County |
 | Moore Museum | Mooretown |
 | Mooretown Sports Complex | Mooretown |
| | Moose Lodge No 1046 | Sarnia |
 | Moravian Day Care Centre, Thamesville | Thamesville |
 | Moraviantown Health Centre | Thamesville |
 | Moraviantown United Church, Thamesville | Thamesville |
| | Moriah Bible Chapel | Lambton County |
 | Morpeth Community Centre | Chatham-Kent |
 | Morpeth Heritage Club | Chatham-Kent |
| | Mother Reach London and Middlesex | London |
 | Mothers Against Drunk Driving (MADD), Sarnia/Lambton Chapter | Sarnia |
 | Motion Gymnastics and Dance | Chatham |
 | Motion Specialties | Sarnia |
 | Motion Specialties, Windsor | Windsor |
 | Motion Specialties London | London |
 | Mount Brydges Rest Home | Mount Brydges |
 | Mount Elgin Women's Institute | Mount Elgin |
 | Mount Hope Centre for Long Term Care | London |
 | Mount Hope Centre for Long Term Care, Short Stay Beds | London |
 | Mount Zion Full Gospel Church | Windsor Central |
 | Mount Zion Presbyterian Church | Ridgetown |
 | MovinYouForward | Chatham-Kent |
 | Moy Medical Centre Family Practice Walk-in Clinic | Windsor |
 | Mt Zion Presbyterian Church, Ridgetown | Ridgetown |
 | Mulberry Bush Child Centre | London |
 | Multicultural Council of Windsor-Essex County, Carrousel of the Nations | Windsor Central |
 | Multicultural Council of Windsor-Essex County, Herb Gray Harmony Award and Gala | Windsor Central |
 | Multicultural Council of Windsor-Essex County, Janette Avenue Site | Windsor Central |
 | Multicultural Council of Windsor-Essex County, Language Services | Windsor Central |
 | Multicultural Council of Windsor-Essex County, Multicultural Health Services | Windsor Central |
 | Multicultural Council of Windsor-Essex County, Newcomer Settlement Program | Windsor Central |
 | Multicultural Council of Windsor-Essex County, Settlement and Integration, Newcomer Settlement Program | Windsor Central |
 | Multicultural Council of Windsor-Essex County, Tecumseh Rd E Site | Windsor East |
 | Multicultural Council of Windsor-Essex County, Welcoming Communities | Windsor |
 | Multiple Births Association, Chatham-Kent | Wallaceburg |
 | Multiple Births Association, Windsor-Essex, Parents of Multiple Births Association | Windsor East |
| | Multiple Sclerosis Society of Canada, Chatham-Kent MS Chapter | Chatham |
 | Multiple Sclerosis Society of Canada, Sarnia Lambton Chapter | Sarnia |
 | Multiple Sclerosis Society of Canada, Windsor-Essex County Chapter | Windsor East |
 | Multiple Sclerosis Society of Canada, Windsor-Essex County Chapter, Day Away Program | Windsor East |
 | Multiple Sclerosis Society of Canada - Ontario Division - London Middlesex Chapter | London |
 | Multiple Sclerosis Society of Canada - Sarnia | Sarnia |
 | Multiple Sclerosis Society of Oxford | Woodstock |
 | Municipal Property Assessment Corporation, Sarnia Chapter | Point Edward |
 | Municipal Property Assessment Corporation, Windsor | Tecumseh |
 | Municipal Property Assessment Corporation (The) - Regional Assessment Office 23 (London) | London |
 | Municipal Youth Council, Chatham-Kent | Chatham-Kent |
 | Municipality of Chatham-Kent, Culture & Recreation Services | Chatham |
 | Municipality of Chatham-Kent, Blenheim Municipal Centre | Blenheim |
 | Municipality of Chatham-Kent, Bothwell Information Desk | Bothwell |
 | Municipality of Chatham-Kent, Community & Health Services, Culture & Recreation Services, Recreation Facilities, Blenheim & District | Blenheim |
 | Municipality of Chatham-Kent, Community & Health Services, Culture & Recreation Services, Recreation Facilities, Ridgetown & District | Ridgetown |
 | Municipality of Chatham-Kent, Community & Health Services, Culture & Recreation Services, Recreation Facilities, Tilbury & District | Tilbury |
 | Municipality of Chatham-Kent, Community Development & Planning Services, Community Services, Recreation Facilities, Wallaceburg & District | Wallaceburg |
 | Municipality of Chatham-Kent, Economic Development Services | Chatham |
 | Municipality of Chatham-Kent, Economic Development Services, Chatham-Kent Small Business Centre | Chatham |
 | Municipality of Chatham-Kent, Economic Development Services, Employment Assistance Service, Employment Resource Centre | Chatham |
 | Municipality of Chatham-Kent, Enforcement Office | Chatham |
 | Municipality of Chatham-Kent, Health and Family Services, Employment and Social Services, Chatham | Chatham |
 | Municipality of Chatham-Kent, Infrastructure and Engineering Services, Engineering and Transportation Division, Handi-Bus, Chatham & Wallaceburg Programs | Chatham |
 | Municipality of Chatham-Kent, Merlin Information Desk | Merlin |
 | Municipality of Chatham-Kent, Municipal Offices, Civic Centre, Chatham | Chatham |
 | Municipality of Chatham-Kent, Ridgetown Municipal Centre | Ridgetown |
 | Municipality of Chatham-Kent, Thamesville Municipal Information Desk | Thamesville |
 | Municipality of Chatham-Kent, Tilbury Municipal Centre | Tilbury |
 | Municipality of Chatham-Kent, Wallaceburg Service Centre | Wallaceburg |
 | Municipality of Chatham-Kent, Wheatley Information Desk | Wheatley |
 | Municipality of Chatham-Kent - Economic Development Services, Business Development and Assistance, Small Business Centre and Business Registrations | Chatham-Kent |
 | Municipality of Lambton Shores | Forest |
 | Munsee-Delaware Nation | Muncey |
| | Muscular Dystrophy Canada, Windsor Chapter | Windsor |
| | Muscular Dystrophy Canada - Ontario and Nunavut Region | London |
 | Music Teachers Association | Sarnia |
 | Muslim Association, Sarnia | Sarnia |
 | Muslim Association of Canada, Rose City Islamic Centre | Windsor East |
 | Muslim Resource Centre for Social Support and Integration | London |
| | My Designated Driver | Sarnia |
 | My Neighbour's Closet | London |