M
- MacGregor Point
- MacKenzie Beach
- MacLeod Beach
- Maiden Lake Public Beach
- Main Beach - Bell Park
- Main Beach - Boulevard Lake
- Main Beach - Chippewa Park
- Makwa Lake Provincial Park Jumbo Beach at Little Jumbo Lake
- Makwa Lake Provincial Park Mewasin Beach at Big Jumbo Lake
- Malibu Club Beach
- Mallard Beach
- Mallay Falls
- Ma-Me-O Beach on Pigeon Lake
- Manitou Beach
- Manitouwadge Lake
- Maple Bay Beach
- Maple Beach
- Mapleguard Point
- Mara Lake
- Marble Lake
- Margaret Beach
- Marie Curtis Park East Beach
- Marie Curtis Park West Beach
- Marina Park
- Marina Way Beach
- Marjorie Pritchard Memorial Park
- Mark's Bay
- Marten River Campground Beach on Lesser Slave Lake
- Martinique Beach
- Martins Lake Regional Park Public Beach
- Mason's Beach Park
- Matheson Lake
- Matlock Beach
- Mavillette Beach
- McConell Lake Provincial Park
- McDonald Beach
- McFarlane Beach
- McGregor Lake Provincial Recreation Area Beach
- McIvor Lake
- McNeill Bay
- Meadow Lake
- Meadow Lake Provincial Park at Matheson Lake Campground
- Meadow Lake Provincial Park Murray Doell Campground Beach at Lac Des Isles
- Meadow Lake Provincial Park Public Beach at Greig Lake
- Meadow Lake Provincial Park Public Beach at Kimball Lake
- Meatbird Lake Park
- Medley River Beach
- Melmerby Beach
- Memorial Lake Regional Park Public Beach
- Mewatha Beach on Skeleton Lake
- Mill Lake
- Minet's Point Beach
- Ministikwan Lake Public Beach
- Miquelon Lake Provincial Park
- Mira Gut Beach
- Mission Beach on Pigeon Lake
- Mitchell's Bay
- Moira Lake
- Monck Provincial Park
- Monora Park
- Mons Lake Day Use Beach and Campground
- Monticola Lake
- Moonlight Beach
- Moonshine Lake Provincial Park Day Use Area Beach
- Moose Beach
- Moose Lake Provincial Park Beach
- Moose Valley Provincial Park
- Mothers Beach
- Mount Douglas Park
- Mowat Bay Park
- Mt. Edziza Provincial Park
- Muriel Lake Park Beach
- Murray Park Beach
- Murrin Lake Beach
- Muskoka Falls Beach