M
- MacDonald
- MacGregor
- Mafeking
- Magnet
- Mallard
- Manhattan Beach
- Manibridge
- Manigotagan
- Manitou
- Maples
- Marco
- Mariapolis
- Markland
- Maskawata
- Matago
- Matawak
- Matawa Place
- Matheson Island
- McArthur Falls
- McAuley
- McCafferty Landing
- McCreary
- McDonald
- McDougalls Landing
- Meadowlands
- Meadow Lea
- Meadowvale
- Mears
- Medard
- Medika
- Melbourne
- Melita
- Melnice
- Melrose
- Menisino
- Mentmore
- Merridale
- Methven
- Metigoshe
- Metikewap
- Miami
- Miklavik
- Million
- Millwater
- Miniota
- Minitonas
- Mink Creek
- Minnedosa
- Minnedosa Beach
- Minnewakan
- Minto
- Minto-Odanah
- Mistiategameek Sipi Indian Reserve
- Mistuhekasookun
- Monahawuhkan
- Montcalm
- Moodie
- Moose Bay
- Moosehorn
- Moose Lake
- Moose Lake 31A
- Moose Lake 31C
- Moose Lake 31D
- Moose Lake 31G
- Moose Lake 31J
- Mooseocoot
- Mooseocoot Indian Reserve No. 2
- Mooseocoot Indian Reserve No. 3
- Moosowhapihsk Sakahegan Indian Reserve
- Moostissoostikwan
- Morden
- Morris
- Morton
- Mossey River
- Moss Spur
- Mountain
- Mountain (North)
- Mountain Road
- Mountain (South)
- Muir
- Mukwa Narrows
- Munroe
- Munro Lake
- Murray Park
- Mystery Lake
