M
- Mabee's Corners
- MacDonald Bay
- MacDonald Beach
- MacDonalds Grove
- Maceys Bay
- MacGillivrays Bridge
- Machar
- Macksville
- MacLean Park
- MacTier
- Macton
- Madigans
- Madoc
- Madoc
- Maecks Subdivision
- Magnetawan
- Magnetawan 1
- Maidstone
- Mainsville
- Mair Mills
- Mair Mills Estates
- Maitland
- Makataewaukawauk
- Malachi
- Malahide
- Malcolm
- Malden Centre
- Mallorytown
- Mallorytown Landing
- Malone
- Manbert
- Mandalane Estates
- Mandaumin
- Manhard
- Manitou Dock
- Manley
- Mannheim
- Maple Corners
- Maplegrove
- Maple Hill
- Maple Hills
- Maple Island
- Maple Lake
- Maple Lake Park
- Maple Lane
- Maple Lawn
- Maple Leaf
- Maple Leaf Acres
- Maple Park
- Maple Ridge
- Maple Ridge
- Mapleton
- Mapleton
- Maple Valley
- Maple View
- Maplewood
- Mar
- Mara Beach
- Marble Rock
- Marburg
- Marchmont
- Marden
- Marentette Beach
- Margach
- Mariatown
- Mariposa Beach
- Markdale
- Marlbank
- Marmion
- Marmora
- Marmora and Lake
- Marmora Station
- Marnoch
- Marsdale
- Marshfield
- Marshville
- Marston
- Marthaville
- Martindale Heights
- Martin Farm
- Martins
- Martins Landing
- Martintown
- Martinville
- Martyrs Shrine
- Marygrove
- Maryhill
- Marysville
- Marysville
- Massie
- Mathers Corners
- Mathias
- Matthiasville
- Maxville
- Maxwell
- Maxwells
- Mayfair
- May Island
- Maynard
- Mayne Corners
- Maynooth
- Maynooth Station
- McAlpine Corners
- McArthurs Mills
- McCarleys Corners
- McCormick
- McCrackens Landing
- McCrackins Beach
- McCrae
- Mc Crosson
- McDonalds
- McDougall
- McGary Flats
- McGaw
- McGinnis Creek
- McGregor
- McGregor Junction
- McGuire Settlement
- McIntosh
- McIntosh Mills
- McIver
- McKay's Corners
- McKellar
- McLeanville
- McMillans Corners
- McMurchy Settlement
- McMurrich/Monteith
- McNab
- McNaught
- McReynolds
- McRoberts Corner
- McVicar
- Meadow Heights
- Meaford
- Medina
- Medonte Hills
- Melbourne
- Melduf
- Melissa
- Melrose
- Melvin Settlement
- Meneset
- Mennonite Corner
- Menoke Beach
- Merlenor Court
- Merlin
- Merrickville-Wolford
- Merritton
- Mertz's Corner
- Metropolitan
- Metz
- Middle Lake Landing
- Middlemarch
- Middlemiss
- Middlesex Centre
- Middleton Park
- Midhurst
- Midhurst Station
- Midland
- Midland Point
- Midlothian
- Milburn
- Mildmay
- Mile Corner
- Milford
- Milford Bay
- Millar Hill
- Millars Corners
- Millarton
- Millbank
- Millbridge
- Millbrook
- Milldale
- Miller Lake
- Miller Lake East
- Miller Lake West
- Millers Corner
- Millhaven
- Milltown
- Milsap
- Milverton
- Mimosa
- Minahico
- Minaki
- Minden
- Minden Hills
- Miners Bay
- Minesing
- Minett
- Mini Lakes
- Minniehill
- Minto
- Mirwins Park
- Mississagua Landing
- Mississauga Beach
- Missouri
- Mitchell
- Mitchell Heights
- Mitchell Lake
- Mitchell's Bay
- Mitchell Square
- Mitchellville
- Mnjikaning First Nation Indian Res. 32
- Moira
- Molesworth
- Moltke
- Monck
- Monck Road
- Moncrieff
- Moneymore
- Monkland
- Monkton
- Monsell
- Monteagle Valley
- Monument Corners
- Moon River
- Moons Beach
- Moons Corners
- Moonstone
- Moore Centre
- Moore Falls
- Moorefield
- Mooresburg
- Mooresville
- Mooretown
- Moose Creek
- Mooselanka Beach
- Moose Point 79
- Moravian 47
- Moraviantown
- Moray
- Mordolphin
- Morewood
- Morgans Point
- Morinus
- Morpeth
- Morrisburg
- Morrisburg Station
- Morrison Lake
- Morrison Landing
- Morriston
- Morris-Turnberry
- Morson
- Morton
- Morven
- Mosborough
- Moscow
- Moserville
- Mosside
- Mossley
- Motherwell
- Motts Mills
- Moulinette Island
- Moulton Station
- Mountain
- Mountain View
- Mountain View Beach
- Mountainview/Bel-Erin
- Mount Brydges
- Mount Burnham
- Mount Carmel
- Mount Carmel
- Mount Chesney
- Mount Elgin
- Mount Forest
- Mount Healy
- Mount Horeb
- Mount Irwin
- Mount Julian
- Mount Pleasant
- Mount Salem
- Mount Stephen
- Mount St. Louis
- Mount Vernon
- Mount View
- Mount Zion
- Muir
- Muirkirk
- Muldrew Lake
- Mulgrave
- Mull
- Mullifarry
- Mulloys
- Mulock
- Mumford
- Muncey
- Munro
- Munroes Mills
- Munsee-Delaware Nation 1
- Murphy Beach
- Murphy Corners
- Murray Hill
- Murvale
- Musclow
- Muskoka
- Muskoka Beach
- Muskoka Falls
- Muskoka Lakes
- Muskoka Lodge
- Muskoka Mills
- Muttonville
- Myersville
- Myrehall
