| Organization Name(s) | Located In |
| M'Chigeeng Binoojiinh Gamgoonhs First Nations Daycare | M'Chigeeng |
| M'Chigeeng Wellness Centre | Mindemoya |
| M'Nendamowin Health Services | Mindemoya |
| Macdonald, Meredith and Aberdeen Additional. Township of | Echo Bay |
| MacDowall, Janet, Physiotherapy Services | Elk Lake |
| MacGillivray Pipe Band | Thunder Bay |
| MacKay Presbyterian Church | Timmins |
| MacKay's Island Pharmacy | Richards Landing |
| MacLean Chiropractic Clinic | Sault Ste Marie |
| Magneto Therapy and Acupuncture Clinic | Azilda |
| Magnus Theatre, The Professional Theatre of Northwestern Ontario | Thunder Bay |
| Mahmowenchike Child Care Centre, Georgina Avenue Site | Thunder Bay |
| Mahmowenchike Child Care Centre, Pacific Avenue Site | Thunder Bay |
| Main Street Pharmacy | Thessalon |
| Maison Verte (La) | Hearst |
| Mamaweswen North Shore Tribal Council | Cutler |
| Mamaweswen North Shore Tribal Council | Blind River |
| Mamaweswen North Shore Tribal Council, Naadmaadwiiuk | Blind River |
| Mamaweswen North Shore Tribal Council, Niigaaniin | Blind River |
| Manitoulin Centennial Manor | Little Current |
| Manitoulin Expositor (The) | Little Current |
| Manitoulin Family Resources Inc | Mindemoya |
| Manitoulin Family Resources Inc, Children's Services | Mindemoya |
| Manitoulin Family Resources Inc, Children's Services, Magic Rainbow Daycare | Mindemoya |
| Manitoulin Family Resources Inc, Children's Services, Manitoulin Best Start Hub | Mindemoya |
| Manitoulin Family Resources Inc, Violence Against Women | Mindemoya |
| Manitoulin Family Resources Inc, Violence Against Women, Haven House | Mindemoya |
| Manitoulin Health Centre, Diabetes Education Clinic | Little Current |
| Manitoulin Health Centre, Little Current Hospital | Little Current |
| Manitoulin Health Centre, Mindemoya Hospital | Mindemoya |
| Manitoulin Health Centre, Mindemoya Medical Clinic | Mindemoya |
| Manitoulin Midwifery | Little Current |
| Manitoulin West Recorder (The) | Gore Bay |
| Manitoulin-Sudbury District Social Services Administration Board, Housing Service Department | Little Current |
| Manitoulin-Sudbury District Social Services Administration Board, Ontario Employment Services | Chapleau |
| Manitouwadge Community Recreation Centre | Manitouwadge |
| Manitouwadge Diabetes Health and Wellness Program | Manitouwadge |
| Manitouwadge Education and Employment Services | Manitouwadge |
| Manitouwadge Food Bank | Manitouwadge |
| Manitouwadge General Hospital | Manitouwadge |
| Manitouwadge General Hospital, Long Term Care Facility | Manitouwadge |
| Manitouwadge Handi Action Group | Manitouwadge |
| Manitouwadge Learning Centre, Literacy and Basic Skills | Manitouwadge |
| Manitouwadge. Township of | Manitouwadge |
| Manitowaning Guardian Pharmacy | Manitowaning |
| Manpower | Thunder Bay |
| Maple Tree Preschool Inc | Sudbury |
| Maplegate House for Women | Elliot Lake |
| Marathon Children and Family Centre | Marathon |
| Marathon Family Health Team | Marathon |
| Marathon Tourist Information Centre | Marathon |
| Marathon. Town of, Municipal Office | Marathon |
| Marconi Mutual Benefit Society | Sault Ste Marie |
| Marjorie House | Marathon |
| Marjorie House, Transitional and Housing Support Program | Manitouwadge |
| Marjorie House, Transitonal and Housing Support Program | Schreiber |
| Markstay Golden Age and Senior Citizen Club | Markstay |
| Markstay Warren Public Library | Markstay |
| Martin, Dr Paul | Copper Cliff |
| Mary Berglund Community Health Centre | Ignace |
| Mary Berglund Community Health Centre, Food Bank | Ignace |
| Mary Queen of The World Parish | Matheson |
| Masonic Order, Algoma District | Thunder Bay |
| Masonic Order, Algoma East District | Sault Ste Marie |
| Massey Northern Lites Seniors | Massey |
| Master Swim Club | Thunder Bay |
| Matachewan First Nation | Matachewan |
| Matawa First Nations | Thunder Bay |
| Matawa First Nations, Matawa First Nations Management, Matawa Employment and Training | Thunder Bay |
| Matheson Chiropractic | Matheson |
| Matheson Medical Clinic | Matheson |
| Mattagami Region Conservation Authority | Timmins |
| Mattawa and District Association for Community Living | Mattawa |
| Matthews Memorial Hospital | Richards Landing |
| Mattice Val Cote Public Library | Mattice |
| Mauno Kaihla Koti Nursing Home | Sault Ste Marie |
| Maxxam Analytics | Guelph |
| Mayer Crittenden, Chantal, Speech and Language Services | Lively |
| Mazzuca Chiropractic Clinic | Sault Ste Marie |
| McCausland Hospital (The) | Terrace Bay |
| McDonald's Pharmacy | Timmins |
| McDonald's Restaurants Public Services | Thunder Bay |
| McGrath, Susan, Barrister and Solicitor | Iroquois Falls |
| McIntosh, Dr Garfield | Sudbury |
| McKitrick Counselling and Consulting | Thunder Bay |
| McMillan, Dr Duncan, Physician | Sudbury |
| McQueen and Associates | Thunder Bay |
| McRae, Dr Shelagh, Physician | Gore Bay |
| Meadowbrook Retirement Village | Lively |
| Meals On Wheels | Sudbury |
| Medical Centre Foot Clinic and Orthotics | Sudbury |
| Medical Pharmacy | Sudbury |
| Medichair | Sudbury |
| Medichair | Thunder Bay |
| Medichair Northern Ontario | Timmins |
| Medichair Northern Ontario | Kapuskasing |
| Medichair Temiskaming | New Liskeard |
| Medicine Shoppe, 2nd Line Location | Sault Ste Marie |
| Medicine Shoppe, Great Northern Rd Location | Sault Ste Marie |
| Medigas | Sudbury |
| Medigas | North Bay |
| Melanie Brousseau Massage Therapy Clinic | Timmins |
| Memorial Society of Thunder Bay | Thunder Bay |
| Mended Hearts Cardiac Support Group | Thunder Bay |
| Mended Hearts Cardiac Support Group | Sudbury |
| Merotto, Dr Robert, Physician | Chelmsford |
| Merrett's IDA Pharmacy | Sault Ste Marie |
| Métis Family Resource Centre | Sault Ste Marie |
| Métis Nation of Ontario | Sault Ste Marie |
| Métis Nation of Ontario, Aboriginal Healthy Babies Healthy Children, Thunder Bay District | Thunder Bay |
| Métis Nation of Ontario, Housing Branch | Thunder Bay |
| Métis Nation of Ontario, Long Term Care, Thunder Bay District | Thunder Bay |
| Métis Nation of Ontario, North Bay Métis Council | North Bay |
| Métis Nation of Ontario, North Bay Métis Council, Employment and Training | North Bay |
| Métis Nation of Ontario, North Bay Métis Council, Health and Wellness | North Bay |
| Metis Nation of Ontario, North Bay Metis Council, Health and Wellness, Aboriginal Healthy Babies Healthy Children | North Bay |
| Métis Nation of Ontario, North Bay Métis Council, Health and Wellness, Long Term Care | North Bay |
| Métis Nation of Ontario, Thunder Bay Métis Council, Community Action Program for Children | Thunder Bay |
| Métis Nation of Ontario, Timmins Métis Council | Timmins |
| Métis Nation of Ontario, Timmins Métis Council, Economic Development | Timmins |
| Métis Nation of Ontario, Timmins Métis Council, Employment and Training | Timmins |
| Métis Nation of Ontario, Timmins Métis Council, Health and Wellness | Timmins |
| Métis Nation of Ontario, Timmins Métis Council, Health and Wellness, Aboriginal Healthy Babies Healthy Children | Timmins |
| Métis Nation of Ontario, Timmins Métis Council, Health and Wellness, Diabetes Awareness Strategy | Timmins |
| Métis Nation of Ontario, Timmins Métis Council, Health and Wellness, Long Term Care | Timmins |
| Metro Pharmacy | Thunder Bay |
| Michaud Medical Pharmacy | Sudbury |
| Michipicoten First Nation | Wawa |
| Mid Canada Bible College, Thunder Bay Branch | Thunder Bay |
| Mid North Network (The) | Sudbury |
| Midwives of Algoma | Sault Ste Marie |
| Midwives of Sudbury | Sudbury |
| Migraine Information Network | Sudbury |
| Minnow Lake New Sudbury Cooperative Nursery School | Sudbury |
| Minto Counselling Centre | Cochrane |
| Minto Counselling Centre | Iroquois Falls |
| Minto Counselling Centre | Matheson |
| Missanabie Cree First Nation | Garden River |
| Mission to Seafarers, Lakehead Branch | Thunder Bay |
| Mississauga First Nation | Blind River |
| Misssissauga First Nation, Enjikendaasang Learning Center | Blind River |
| Mitchell Pharmacy | Blind River |
| Mitchell, Dr Lesley, Physician | Sudbury |
| Mockingbird Hill Farm | Sault Ste Marie |
| Moonbeam Public Library | Moonbeam |
| Moose Cree First Nation, Health Services | Moose Factory |
| Moose Cree First Nation, Social Assistance | Moose Factory |
| Moose Factory Tourism Association | Moose Factory |
| Moose FM | Kapuskasing |
| Moosonee Non Profit Housing Corp | Moosonee |
| More Than Words, Ontario Employment Services | Longlac |
| More Than Words, Ontario Employment Services | Geraldton |
| Morrison, M Elizabeth, Speech And Language Pathologist | Thunder Bay |
| Mothers Against Drunk Driving, Thunder Bay Chapter | Thunder Bay |
| Motion Specialties Sault Ste Marie | Sault Ste Marie |
| Mountaintop Enterprises, Men's Studies Center | Sudbury |
| Mulloy, Dr John | Sudbury |
| Multicultural Association of Kenora and District (The) | Kenora |
| Multicultural Association of Northwestern Ontario | Thunder Bay |
| Multicultural Association of Northwestern Ontario, Regional Multicultural Youth Council | Thunder Bay |
| Multicultural Society of Timmins Inc | Timmins |
| Multiple Sclerosis Society of Canada, Muskoka Chapter | Utterson |
| Multiple Sclerosis Society of Canada, North Bay and District Chapter | North Bay |
| Multiple Sclerosis Society of Canada, Sault Algoma Chapter | Sault Ste Marie |
| Multiple Sclerosis Society of Canada, Sudbury Chapter | Sudbury |
| Multiple Sclerosis Society of Canada, Thunder Bay Chapter | Thunder Bay |
| Mum's Cleaning | Thunder Bay |
| Municipal Property Assessment Corporation | Thunder Bay |
| Municipal Property Assessment Corporation, Territorial District of Algoma | Sault Ste Marie |
| Municipality of Huron Shores | Iron Bridge |
| Municipality of Wawa | Wawa |
| Murphy, Jackie, Physiotherapy Services | Cobalt |
| Murray, Dr Sean, Pediatrician | Sudbury |
| Muscular Dystrophy Canada, Ontario and Nunavut | Toronto |
| Mushkegowuk Council | Moose Factory |
| Mushkegowuk Council, Ontario Employment Services | Moosonee |
| Music and Film in Motion | Sudbury |
| Music for Young Children | Thunder Bay |
| Musical Comedy Guild of Sault Ste Marie | Sault Ste Marie |
| Muskoka Algonquin Healthcare, Burk's Falls and District Health Centre | Burk's Falls |
| Muskoka Nipissing Parry Sound Local Training and Adjustment Board | North Bay |
| My Sudbury | Sudbury |
| Myers Dr Rodney, Chiropractic Clinic | Sault Ste Marie |
