| Maidfinders Housekeeping Services | Mississauga |
| Main Drug Mart, 2200 Dixie Rd | Mississauga |
| Main Drug Mart, 3415 Dixie Rd | Mississauga |
| Main Drug Mart Pharmacy, Duke of York Blvd | Mississauga |
| Main Street Medical Pharmacy | Brampton |
| Malton Medical Radiology and Ultrasound | Malton |
| Malton Neighbourhood Services | Malton |
| Malton Neighbourhood Services, Brampton LINC Program | Brampton |
| Malton Neighbourhood Services, Malton LINC Program | Malton |
| Malton Neighbourhood Services, Newcomer Support - Settlement Services | Brampton |
| Malton Neighbourhood Services, Seniors Program - Caribbean Seniors Group | Malton |
| Malton Neighbourhood Services, Youth Programs | Malton |
| Malton Neighbourhood Services, Youth Programs, Counselling - Youth Coordinator (YC) - Youth Outreach Worker (YOW) - Clinical Youth Outreach Worker (CYOW) | Malton |
| Malton Neighbourhood Services,, Youth Programs - Youth Academic Support Program | Malton |
| Malton Veterinary Services | Malton |
| Malton Village, Adult Day Program | Mississauga |
| Malton Village, Long Term Care Centre | Mississauga |
| Manorbridge, Seniors Apartments | Brampton |
| Maple Avenue, Seniors Apartments | Brampton |
| Maple Grove (Caledon Village), Seniors Apartments | Caledon Village |
| Maple Grove Care Community | Brampton |
| Maplewood Academy | Mississauga (City of) |
| March of Dimes Canada | |
| March of Dimes Canada, Brampton Outreach | Brampton |
| March of Dimes Canada, Home and Vehicle Modification Program | Peel Region |
| Mark Alter Associates | Brampton |
| Marketplace Pharmacy, Mississauga | Mississauga |
| Martingrove Child Care Centre | Etobicoke |
| Mary Centre, Brampton | Brampton |
| Mary Centre, Supported Community Group Living | Brampton |
| Mary Centre, Transition into Long Term Care Program | Brampton |
| Mary Centre - Peel Region Office, Community Connections - Elder and Adult Connections Services | Brampton |
| Mary Centre - Peel Region Office, Respite | Brampton |
| Mary Centre - Peel Region Office, Supported Independent living | Brampton |
| Mary Centre - Region of Peel, Community Connections - Elder and Adult Connections Services | Brampton |
| Masons, Toronto West District, Ionic Lodge 229 | Brampton |
| Masons, Toronto West District, Joseph A Hearn Lodge 685 | Port Credit |
| Masons, Toronto West District, Mississauga Lodge 524 | Mississauga |
| Masons, Toronto York District, True Blue Lodge 98 | Bolton |
| Math4me, Brampton | Brampton (City of) |
| Math4me Tutoring Mississauga | Cooksville |
| Mavis Wellness | Mississauga |
| McHardy Court, Seniors Apartments | Brampton |
| MCI Medical Clinics, Etobicoke - Dundas St W | Etobicoke |
| MCI Medical Clinics, The Doctor's Office, Millcreek Dr | Mississauga |
| MCI-The Doctor`s Office | Mississauga |
| McKelvie-Burnside Village, Shelburne | Shelburne |
| McLaughlin Medical Pharmacy | Brampton |
| MCS Chorus | Mississauga |
| MDR Clinic, Maple Leaf Physiotherapy and Pelvic Health | Brampton |
| Meadowest Preschool Inc. | Meadowvale |
| Meadowvale Pharmacy, Diabetes and Compounding Centre | Mississauga |
| Meadowvale Professional Centre Pharmacy | Mississauga |
| Meadowvale YMCA Child Care Centre | Mississauga |
| Medical Building Pharmacy | Mississauga |
| Medical Image Wigs | Oakville |
| Medical Mart Home Healthcare, Mississauga | Mississauga |
| Medione Fogal Pharmacy | Brampton |
| Medi-Place Healthcare Pharmacy | Brampton |
| Mediplus Pharmacy | Etobicoke North |
| Mediplus Pharmacy 002 | Mississauga |
| Medix College, Brampton Campus | Brampton |
| Med-Place Walk-In Clinic | Mississauga |
| Medvisit Doctor Housecalls | Greater Toronto Area |
| Merrynath Support Services | |
| Métis Nation of Ontario, Brampton - Community Wellness Workers Program | Brampton |
| Metro Pharmacy, Brampton - Great Lakes Dr | Brampton |
| Metro Pharmacy, Brampton - Peel Centre Dr | Brampton |
| Metro Pharmacy, Mississauga - Derry Rd W | Mississauga |
| MIAG Centre for Diverse Women & Families | Mississauga |
| MICBA Forum Italia Community Services, Forum Italia Seniors' Residence | Mississauga |
| Midnite Pharmacy | Mississauga |
| Midwifery Care of Peel and Halton Hills | Mississauga |
| Mighty Wonders Preschool & Childcare | Meadowvale |
| Millcreek Kinder Kampus | Meadowvale |
| Millway Drug Mart | Mississauga |
| Milton Community Resource Centre | Milton |
| Mini-Skool - Bromsgrove | Clarkson |
| Mini-Skool - Cawthra Road | Cooksville |
| Mini-Skool A Child's Place, Mini-Skool - Brampton | Brampton |
| Mini-Skool Clubhouse - 106A | Bramalea |
| Mini-Skool Clubhouse - 106B | Bramalea |
| Mini-Skool Clubhouse 103A | Clarkson |
| Ministry of Children Community and Social Services, Ontario Disability Support Program (ODSP), Brampton Office | Brampton |
| Ministry of Children Community and Social Services, Ontario Disability Support Program (ODSP), Mississauga Office | Mississauga |
| Ministry of Government Services, Ontario Health Insurance System | Mississauga |
| Mississauga Ballet Association | Mississauga |
| Mississauga Big Band Jazz Ensemble | Mississauga |
| Mississauga Board of Trade | Mississauga |
| Mississauga Bocce Club and Association | Mississauga |
| Mississauga Business Entrepreneur Centre | Mississauga |
| Mississauga Central Library | Mississauga |
| Mississauga Central Lions Club, Lions Clubs International District A-711, Lions Clubs International | Mississauga |
| Mississauga Children's Choir | Mississauga |
| Mississauga Chinese Business Association | Mississauga |
| Mississauga Christian French school | Streetsville |
| Mississauga Civic Centre Work Place Day Care | Cooksville |
| Mississauga Community Legal Services | Mississauga |
| Mississauga Cycling Advisory Committee | Mississauga |
| Mississauga East ATCD | |
| Mississauga Festival Choir | Mississauga |
| Mississauga Fibromyalgia Support Group, Mississauga | Mississauga |
| Mississauga Football League | |
| Mississauga Halton Local Health Integration Network - Home and Community Care | Peel Region |
| Mississauga Handweavers and Spinners Guild | Mississauga |
| Mississauga Heritage Foundation | Mississauga |
| Mississauga Library, Erin Meadows Branch | Mississauga |
| Mississauga Library, South Common Library | Erin Mills |
| Mississauga Library, Woodlands Library | Erindale |
| Mississauga Library System, Burnhamthorpe Branch | Cooksville |
| Mississauga Library System, Central Library | Cooksville |
| Mississauga Library System, Churchill Meadows Branch | Meadowvale |
| Mississauga Library System, Clarkson Branch | Clarkson |
| Mississauga Library System, Cooksville Branch | Cooksville |
| Mississauga Library System, Courtneypark Branch | Meadowvale |
| Mississauga Library System, Frank McKechnie Library | Streetsville |
| Mississauga Library System, Lakeview Branch | Lakeview |
| Mississauga Library System, Lorne Park Branch | Lorne Park |
| Mississauga Library System, Malton Library | Malton |
| Mississauga Library System, Meadowvale Library | Meadowvale |
| Mississauga Library System, Mississauga Valley Branch | Cooksville |
| Mississauga Library System, Port Credit Branch | Port Credit |
| Mississauga Library System, Sheridan Branch | Erin Mills |
| Mississauga Library System, Streetsville Branch | Streetsville |
| Mississauga Long Term Care Facility | Mississauga |
| Mississauga Mandarin Association | Mississauga |
| Mississauga Model Flying Club | Mississauga |
| Mississauga Newcomers & ACORN Club (also known as The Friendship Club) | Mississauga |
| Mississauga News | Mississauga |
| Mississauga North Baseball Association | Mississauga |
| Mississauga Olympians Track and Field Athletic Association | Mississauga |
| Mississauga Pops Concert Band | Mississauga |
| Mississauga Potters' Guild | Mississauga |
| Mississauga Quilters Guild | Mississauga |
| Mississauga Ridgeway YMCA Child Care Center | Erin Mills |
| Mississauga Scrabble Club | Mississauga |
| Mississauga Seniors' Centre | Mississauga |
| Mississauga Sports Council | Mississauga |
| Mississauga Stamp Club | Mississauga |
| Mississauga Symphony Orchestra | Mississauga |
| Mississauga Touch Football League | Mississauga |
| Mississauga Urgent Care Clinic | Mississauga |
| Mississauga Valley YMCA Child Care Centre | Cooksville |
| Mississauga Wellness Clinic | Mississauga |
| Mississauga, Member of Council, Mississauga - Mayor, Bonnie Crombie | Mississauga |
| Mississauga. City Council | Mississauga |
| Mississauga. City Manager's Office | Mississauga |
| Mississauga. City Of | Mississauga |
| Mississauga. Community Services Department | Mississauga |
| Mississauga. Community Services Department, Parks and Forestry Division, Zonta Accessible Playground | Mississauga |
| Mississauga. Community Services Department, Recreation and Parks Division, Burnhamthorpe Community Centre | Cooksville |
| Mississauga. Community Services Department, Recreation and Parks Division, Carmen Corbasson Community Centre | Port Credit |
| Mississauga. Community Services Department, Recreation and Parks Division, Churchill Meadows Community Centre | Meadowvale |
| Mississauga. Community Services Department, Recreation and Parks Division, Clarkson Community Centre | Clarkson |
| Mississauga. Community Services Department, Recreation and Parks Division, Erin Meadows Community Centre | Erin Mills |
| Mississauga. Community Services Department, Recreation and Parks Division, Frank McKechnie Community Centre | Streetsville |
| Mississauga. Community Services Department, Recreation and Parks Division, Huron Park Community Centre | Erindale |
| Mississauga. Community Services Department, Recreation and Parks Division, Iceland Sports Complex | Cooksville |
| Mississauga. Community Services Department, Recreation and Parks Division, Malton Community Centre | Malton |
| Mississauga. Community Services Department, Recreation and Parks Division, Malton Victory Hall | Malton |
| Mississauga. Community Services Department, Recreation and Parks Division, Meadowvale Community Centre | Meadowvale |
| Mississauga. Community Services Department, Recreation and Parks Division, Mississauga Sports Zone | Cooksville |
| Mississauga. Community Services Department, Recreation and Parks Division, Mississauga Valley Community Centre | Cooksville |
| Mississauga. Community Services Department, Recreation and Parks Division, Paul Coffey Arena | Malton |
| Mississauga. Community Services Department, Recreation and Parks Division, River Grove Community Centre | Streetsville |
| Mississauga. Community Services Department, Recreation and Parks Division, South Common Community Centre | Erin Mills |
| Mississauga. Community Services Department, Recreation Division, Customer Service Centre | Mississauga |
| Mississauga. Corporate Services Department, Legislative Services | Mississauga |
| Mississauga. Member of Council, Mississauga Ward 10 - City & Regional Councillor, Sue McFadden | Mississauga |
| Mississauga. Member of Council, Mississauga Ward 11 - City and Regional Councillor, Brad Butt | Mississauga |
| Mississauga. Member of Council, Mississauga Ward 2 - City & Regional Councillor, Karen Ras | Mississauga |
| Mississauga. Member of Council, Mississauga Ward 3, City and Regional Councillor, Chris Fonseca | Mississauga |
| Mississauga. Member of Council, Mississauga Ward 5 - City and Regional Councillor, Carolyn Parrish | Mississauga |
| Mississauga. Member of Council, Mississauga Ward 6 - City & Regional Councillor, Ron Starr | Mississauga |
| Mississauga. Member of Council, Mississauga Ward 7 - City and Regional Councillor, Dipika Damerla | Mississauga |
| Mississauga. Member of Council, Mississauga Ward 8 - City and Regional Councillor, Matt Mahoney | Mississauga |
| Mississauga. Member of Council, Mississauga Ward 9 - City & Regional Councillor, Pat Saito | Mississauga |
| Mobility Plus Physiotherapy | Bolton |
| Mobility Specialties Inc. | |
| Molly's Club - Adult Day Program, Blueforce Living, Blueforce Logistics | Streetsville |
| Monarch House | Oakville |
| Monarch House | Meadowvale |
| Monolog Communications Inc., In the Hills Magazine | Orangeville |
| Montessori Country School | Nobleton |
| Montessori in the Woods Inc. | Lorne Park |
| Montessori Leaders Casa | Brampton |
| MontessoriWorks-The School for Me | Erin Mills |
| Motion Mississauga | Mississauga |
| Mount Pleasant Montessori | Brampton |
| Moyo Health and Community Services | Brampton |
| Mudo Academy Taekwondo | Brampton |
| Multicultural History Society of Ontario | Greater Toronto Area |
| Multi-Speciality Medical Clinic | Mississauga |
| Municipal Property Assessment Corporation, Mississauga Assessment Office | Mississauga |
| Museums of Mississauga, Bradley Museum, Benares Historic House and Leslie Log House | Mississauga |
| Muslim Community Services | Mississauga |
| Muslim Community Services, Brampton | Brampton |
| Muslim Welfare Center | Mississauga (City of) |
| My First Montessori School Inc | Brampton |
| My French Club Inc | Peel Region |
| My Furniture Bank, (Mississauga Furniture Bank) | Oakville |
| Myasthenia Gravis Society of Canada | Stouffville |
| MyHealth Centre, Brampton Centre - Cardiology and Diagnostic Imaging | Brampton |
| MyRxHealth - Bristol Pharmacy | Mississauga |