List of lakes of Ontario: M

• Mabel Lake (Kenora District) • Mabel Lake (Algoma District) • Mabel Pond • Maben Lake • Mabie Lake ==Mac–MacI==

• Mac Lake (Cochrane District) • Mac Lake (Rainy River District) • Mac Lake (Timiskaming District) • Mac Lake (Kenora District) • MacAdam Lake • Macamic Lake • Macara Lake • Macauley Lake • MacCormack Lake • MacCuaig Lake • Macdonald Lake (Haliburton County) • Macdonald Lake (Emo Township, Sudbury District) • Macdonald Lake (Thunder Bay District) • Macdonald Lake (Asquith Township, Sudbury District) • MacDonald Lake (Parry Sound District) • MacDonald Lake (Thunder Bay District) • MacDonalds Lake • MacDonnell Lake • Loch Macdougall • MacDowell Lake • Macduff Lake • MacDuff Lake • Macey Lake • Macfie Lake • MacFie Lake • MacGibbon Lake • MacGillivray Lake • MacGregor Lake • Machan Lakes • Machawaian Lake • Machesney Lake • Machine Gun Lake • MacInnes Lake • MacIntosh Lake ==Mack–Macv==

• Mack Lake (Sudbury District) • Mack Lake (Algoma District) • Mack Lake (Nipissing District) • Mack Lake (Rainy River District) • Mack Lake (Kenora District) • Mackavoy Lake • Mackay Lake (Kenora District) • Mackay Lake (Timiskaming District) • MacKay Lake • MacKeith Lake • Mackenzie Lake (Shuniah) • Mackenzie Lake (Flett Township, Nipissing District) • Mackenzie Lake (Clearwater Lake, Thunder Bay District) • Mackenzie Lake (Anglin Township, Nipissing District) • Mackenzie Lake (Renfrew County) • MacKenzie Lake (Cochrane District) • MacKenzie Lake (Kenora District) • Mackey Lake (Sudbury District) • Mackey Lake (Algoma District) • Mackeys Lake • Mackie Lake (Kenora District) • Mackie Lake (Frontenac County) • Mackie Lake (Thunder Bay District) • Mackie Lake (Sudbury District) • Mackinaw Lake • Macklin Lake • MacLaren Lake • Macle Lake • MacLean Lake (Simcoe County) • MacLean Lake (Kenora District) • MacLeod Lake • MacMaster Lake • MacMillan Lake • Maconner Lake • Macoun Lake • Macpherson Lake • MacPherson Lake (Thunder Bay District) • MacPherson Lake (Renfrew County) • MacRae Lake • Mac's Lake (Manitoulin District) • Mac's Lake (Thunder Bay District) • Macsmith Lake • Macutagon Lake • Macutagon Ponds • Macvicar Lake ==Mad–Mag==

• Madaire Lake • Madalaine Lake • Madawanson Lake • Lake Madawaska • Madawaska Lake • Madden Lake (Lanark County) • Madden Lake (Thunder Bay District) • Madden Lake (Kenora District) • Madden Lake (Timiskaming District) • Mad Dog Lake • Mader Lake • Madge Lake (Delmage Township, Sudbury District) • Madge Lake (Creelman Township, Sudbury District) • Madill Lake • Madoson Lake • Madwort Lake • Mae Lake • Maeck Lake • Mafeking Lake • Mag Lake • Mageau Lake (Timiskaming District) • Mageau Lake (Sudbury District) • Magee Lake (Nipissing District) • Magee Lake (Sturgeon Lake, Thunder Bay District) • Magee Lake (Adamson Township, Thunder Bay District) • Maggie Lake (Sudbury District) • Maggie Lake (Nipissing District) • Maggie Lake (Timiskaming District) • Maggie's Lake • Maggotte Lake • Magie Lake • Magiskan Lake • Magiss Lake • Magnesium Lake • Magnet Lake (Kenora District) • Magnet Lake (Thunder Bay District) • Magnet Lake (Algoma District) • Magnetawan Lake • Magnetic Lake (Thunder Bay District) • Magnetic Lake (Rainy River District) • Magnetite Lake • Magneto Lake • Magnus Lake • Magoffin Lake • Magog Lake • Magone Lake (Algoma District) • Magone Lake (Thunder Bay District) • Magpie Lake (Kenora District) • Magpie Lake (Nipissing District) • Magrath Lake • Maguire Lake ==Mah–Mak==

• Mahagan Lake • Mahamo Lake • Maher Lake • Mahkahtahkahmaekoo Sahkaheekahn/Sampson Lake • Mahogany Lake • Mahon Lake (Rainy River District) • Mahon Lake (Timiskaming District) • Mahoney Lake • Mahree Lake • Mahzenazing Lake • Maiden Lake • Maidens Lake • Maika Lake (Kenora District) • Maika Lake (Renfrew County) • Maille Lake • Mainey Lake • Mainhood Lake • Mainprize Lake • Mainville Lake • Mair Lake (Frontenac County) • Mair Lake (Kenora District) • Majata Lake • Major Lake (Thunder Bay District) • Major Lake (Sudbury District) • Major Lake (Nipissing District) • Majores Lake • Makada Lake • Makadawa Lake • Makami Lake • Makataiamik Lake • Maki Lake (Thunder Bay District) • Maki Lake (Algoma District) • Maki Lake (Nipissing District) • Maki Lake (Sudbury District) • Making Ground Lake • Makins Lake • Makobe Lake • Makoki Lake • Makokibatan Lake • Makomesut Lake • Makonie Lake • Makoop Lake • Makwa Lake ==Mal==

• Mal Lake (Algoma District) • Mal Lake (Sudbury District) • Malachi Lake • Malaher Lake • Malastikweyau Lake • Malbeuf Lake • Malborne Lake • Malcolm Lake (Timiskaming District) • Malcolm Lake (Frontenac County) • Male Lake • Malette Lake • Mall Lake (Kenora District) • Mall Lake (Cochrane District) • Mall Lake (Algoma District) • Mallard Lake (Hastings County) • Mallard Lake (Timiskaming District) • Mallard Lake (Parry Sound District) • Mallard Lake (Cochrane District) • Mallard Lake (Sudbury District) • Mallard Lake (Renfrew County) • Mallard Lake (Thunder Bay District) • Mallard Lake (Nipissing District) • Mallards Pond • Mallet Lake • Mallett Lake • Mallic Lake • Malloch Lake (Nipissing District) • Malloch Lake (Cochrane District) • Mallory Lake • Mallot Lake • Mallow Lake • Malloy Lake • Malmo Lake • Malone Lake (Renfrew County) • Malone Lake (Nipissing District) • Malone Lake (Rainy River District) • Malone Lake (Timiskaming District) • Maloney Lake (Cochrane District) • Maloney Lake (Timiskaming District) • Maloney's Lake • Malotte Lake • Malpa Lake • Malta Lake • Maltese Lake • Maluish Lake • Malzan Lake ==Mam==

• Mama Lake • Mamainse Lake • Mamakwash Lake • Mamamia Lake • Mameigwess (Fishbasket Lake, Kenora District) • Mameigwess (Bradshaw Township, Kenora District) • Mamie Lake • Mamiegowish Lake ==Man==

• Man Lake • Manabezi Lake • Manard Lake • Manchester Lake (Thunder Bay District) • Manchester Lake (Bruce County) • Mandeville Lake • Manford Lake • Mang Lake (Algoma District) • Mang Lake (Kenora District) • Mangotasi Lake • Manido Lake • Manikoman Lake • Manion Lake (Thunder Bay District) • Manion Lake (Rainy River District) • Manitoosh Lake • Lake Manitou • Manitou Lake (Clement Township, Nipissing District) • Manitou Lake (Wilkes Township, Nipissing District) • Manitounamaig Lake • Manitouwaba Lake • Manitouwabing Lake • Manitouwadge Lake • Manitowik Lake • Manitumeig Lake • Manitush Lake • Mank Lake • Mann Lake (Nipissing District) • Mann Lake (Hastings County) • Mann Lake (Thunder Bay District) • Mann Lake (Parry Sound District) • Mann Lake (Lanark County) • Mannajigama Lake • Mannerheim Lake • Manning Lake • Manomin Lake (Kenora District) • Manomin Lake (Rainy River District) • Mansell Lake • Manson Lake • Manta Lake • Mantan Lake • Mantario Lake • Mantle Lake • Manton Lake • Mantricia Lake • Many Branches Lake • Lake of Many Islands • Manzell Lake ==Map–Maq==

• Maple Lake (Haliburton County) • Maple Lake (Rainy River District) • Maple Lake (Manitoulin District) • Maple Lake (Thunder Bay District) • Maple Lake (Algoma District) • Maple Lake (Sudbury District) • Maple Lake (Seguin) • Maple Lake (Whitestone) • Maple Lake (Oxford County) • Maple Lake (Nipissing District) • Maple Leaf Lake • Mapleleaf Lake • Maquatie Lake • Maquon Lake ==Mar–Marg==

• Mar Lake • Mara Lake • Maraboeuf Lake • Maraboo Lake • Maracle Lake • Maran Lake • Marathon Lake • Marble Lake (Hastings County) • Marble Lake (Frontenac County) • Marble Lake (Thunder Bay District) • Marble Lake (Renfrew County) • Marceau Lake (Timiskaming District) • Marceau Lake (Cochrane District) • Marcelle Lake • March Hare Lake • March Lake (Kenora District) • March Lake (Rainy River District) • March Lake (Algoma District) • Marchant Lake • Marchington Lake • Marcia Lake • Marcy Lake • Margaree Lake • Margaret Lake (Sudbury District) • Margaret Lake (Rainy River District) • Margaret Lake (Muskoka District) • Margaret Lake (Timiskaming District) • Margaret Lake (Cochrane) • Margaret Lake (Pearce Township, Cochrane District) • Margaret Lake (Kenora District) • Margaret Lake (Renfrew County) • Margo Lake • Margon Lake • Margot Lake • Margret Lake • Margueratt Lake • Marguerite Lake (Rainy River District) • Marguerite Lake (Sudbury District) ==Mari–Marj==

• Maria Lake (Thunder Bay District) • Maria Lake (Kenora District) • Maria Lake (Rainy River District) • Marian Lake • Marie Lake (Cochrane District) • Marie Lake (Bryant Township, Thunder Bay District) • Marie Lake (Nipissing District) • Marie Lake (Greenstone) • Marie Lake (Sudbury District) • Marie Louise Lake • Marigold Lake • Marila Lake • Marilyn Lake (Kenora District) • Marilyn Lake (Renfrew County) • Marina Lake • Marion Lake (Ycliff Creek, Kenora District) • Marion Lake (Muskoka District) • Marion Lake (Alanen Township, Algoma District) • Marion Lake (Mallard Township, Sudbury District) • Marion Lake (Miramichi Township, Sudbury District) • Marion Lake (Nipissing District) • Marion Lake (Whitefish River, Kenora District) • Marion Lake (Moncrieff Township, Sudbury District) • Marion Lake (Rainy River District) • Marion Lake (Timiskaming District) • Marion Lake (McConnell Township, Sudbury District) • Marion Lake (Plourde Township, Algoma District) • Marion Lake (Pellatt Township, Kenora District) • Marionette Lake • Marisea Lake • Marius Lake • Marj Lake • Marjorie Lake (Sudbury District) • Marjorie Lake (Manitoulin District) • Marjorie Lake (Timiskaming District) • Marjorie Lake (Algoma District) • Marjory Lake ==Mark–Marr==

• Mark Lake (Kenora District) • Mark Lake (Cochrane District) • Mark Lake (Sudbury District) • Mark Lake (Rainy River District) • Markell Lake • Markle Lake • Markop Lake • Marks Lake (Cochrane District) • Marks Lake (Weikwabinonaw River, Thunder Bay District) • Marks Lake (Marks Township, Thunder Bay District) • Marl Lake (Simcoe County) • Marl Lake (Sudbury District) • Marl Lake (Frontenac County) • Marl Lake (Bruce County) • Marl Lake (Rainy River District) • Marl Pond • Marland Lake • Marley Lake • Marline Lake • Marlow Lake • Marly Lake • Marmil Lake • Marmion Lake • Marmot Lake • Marmota Lake • Marne Lake • Marquardt Lake • Marquardt Pond • Marquardts Lake • Marquette Lake • Marquis Lake • Marr Lake (Bruce County) • Marr Lake (Rainy River District) • Marr Lake (Thunder Bay District) • Marrin Lake • Marron Lake ==Mars==

• Mars Lake (Kenora District) • Mars Lake (Cochrane District) • Marsden Lake • Marsh Lake (Selkirk Township, Sudbury District) • Marsh Lake (Lac Seul, Kenora District) • Marsh Lake (Parry Sound District) • Marsh Lake (Elliot Lake) • Marsh Lake (Renfrew County) • Marsh Lake (Aguonie Township, Algoma District) • Marsh Lake (Manitoulin District) • Marsh Lake (Sutherland Township, Rainy River District) • Marsh Lake (Mongowin Township, Sudbury District) • Marsh Lake (Frontenac County) • Marsh Lake (Cochrane District) • Marsh Lake (Cherry River, Rainy River District) • Marsh Lake (Margaret Lake, Kenora District) • Marshall Lake (Nipissing District) • Marshall Lake (Lower Manitou Lake, Kenora District) • Marshall Lake (Lanark County) • Marshall Lake (Timiskaming District) • Marshall Lake (Thunder Bay District) • Marshall Lake (Breithaupt Township, Kenora District) • Marshall Lake (Sudbury District) • Marshall Lake (Lennox and Addington County) • Marshall's Lake • Marshalok Lake • Marshland Lake • Marshrat Lake • Marshy Lake (Kenora District) • Marshy Lake (Algoma District) • Marshy Lake (Sudbury District) • Marshy Lake (Nipissing District) • Marston Lake ==Mart==

• Mart Lake (Nipissing District) • Mart Lake (Algoma District) • Marta Lake • Martel Lake • Martell Lake • Marten Lake (Moonbeam) • Marten Lake (Hornepayne) • Marten Lake (Thunder Bay District) • Marten Lake (Nipissing District) • Marten Lake (Kenora District) • Marten Lake (Meen Township, Algoma District) • Marten Lake (Clifford Township, Cochrane District) • Martencamp Lake • Martin Lake (McEwing Township, Algoma District) • Martin Lake (Crawford Township, Cochrane District) • Martin Lake (Vibert Township, Algoma District) • Martin Lake (Robertson Creek, Kenora District) • Martin Lake (Parry Sound District) • Martin Lake (Thunder Bay District) • Martin Lake (Rainy River District) • Martin Lake (Manitoulin District) • Martin Lake (Meath Township, Algoma District) • Martin Lake (Timiskaming District) • Martin Lake (Haliburton County) • Martin Lake (Muskoka District) • Martin Lake (Mewhinney Township, Cochrane District) • Martin Lake (Ashaweig River, Kenora District) • Martin's Pond • Martindale Pond • Martineau Lake • Martinet Lake • Martini Lake • Martins Lake • Martinsen Lake • Martinson Lake • Martison Lake • Marty Lake ==Maru–Mary==

• Marugg Lake • Marven Lake • Mary Ann Lake (Algoma District) • Mary Ann Lake (Timiskaming District) • Mary Jane Lake (Thunder Bay District) • Mary Jane Lake (Parry Sound District) • Mary Jane Lake (Muskoka District) • Mary Lake (Pitt Lake, Kenora District) • Mary Lake (Rainy River District) • Mary Lake (Muskoka District) • Mary Lake (Algoma District) • Mary Lake (Ben Nevis Township, Cochrane District) • Mary Lake (Studholme Township, Cochrane District) • Mary Lake (York Region) • Mary Lake (Thunder Bay District) • Mary Lake (Grey County) • Mary Lake (Stink Lake, Kenora District) • Mary Lake (St. John Township, Cochrane District) • Maryann Lake • Maryjane Lake • Maryjo Lake • Marylyn Lake • Marys Lake • Maryville Lake ==Mas==

• Masalin Lake • Mash Lake • Mashagama Lake • Mashkigomin Lake • Mashkik Lake • Masikesk Lake • Masinabik Lake • Mask Lake (Kenora District) • Mask Lake (Algoma District) • Maskara Lake • Maskerine Lake • Maskinonge Lake (Renfrew County) • Maskinonge Lake (Sudbury District) • Maskinonge Lake (Algoma District) • Maskooch Lake • Maskosi Lake • Maskuti Lake • Maskwa Lake • Mason Lake (Mackenzie River, Thunder Bay District) • Mason Lake (Sudbury District) • Mason Lake (Amethyst Lake, Thunder Bay District) • Mason Lake (Laurentian Hills) • Mason Lake (Greater Madawaska) • Mason Lake (Kenora District) • Mason Lake (Parry Sound District) • Masse Lake • Massey Lake • Massia Lake • Masten Lake • Master Lake • Masterson Lake ==Mat–Mau==

• Matachewan Lake • Matagamasi Lake • Mataris Lake • Matchett Lake • Matchinameigus Lake • Mate Lakes • Mathe Lake • Mather Lake (Sudbury District) • Mather Lake (Kenora District) • Mather Lake (Cochrane District) • Mather's Lake • Mathew Lake • Mathews Lake • Mathieu Lakes • Matier Lake • Matikwan Lake • Matilda Lake (Algoma District) • Matilda Lake (Kenora District) • Matinenda Lake • Matson Lake (Rainy River District) • Matson Lake (Northumberland County) • Matson Lake (Thunder Bay District) • Mattagami Lake • Mattawa Lake • Mattawishkwia Lake • Matthews Lake (Algoma District) • Matthews Lake (Muskoka District) • Matthews Lake (Kenora District) • Matthews Lake (Grey County) • Matthie Lake • Matti Lake • Mattice Lake • Mattin Lake • Mattless Lake • Mattowacka Lake • Mattson Lake • Maud Lake (Kenora District) • Maud Lake (Algoma District) • Maude Lake (Thunder Bay District) • Maude Lake (Algoma District) • Maun Lake • Maund Lake • Maunsell Lake • Maureen Lake ==Mav–Maz==

• Maves Lake • Maville Lake • Mavin Lake • Mavis Lake (Algoma District) • Mavis Lake (Timiskaming District) • Mavis Lake (Kenora District) • Maw Lake (Rainy River District) • Maw Lake (Kenora District) • Mawgi Lake • Mawibuha Lake • Mawley Lake • Mawn Lake • Mawson Lake • Max Lake (Nipissing District) • Max Lake (Thunder Bay District) • Maxam Lake • Maxey Lake • Maxim Lake • Maxon Lake • Maxwell Lake (Kenora District) • Maxwell Lake (Cochrane District) • May Lake (Sioux Lookout) • May Lake (Gould Township, Algoma District) • May Lake (Parry Sound District) • May Lake (Rainy River District) • May Lake (Greater Sudbury) • May Lake (Cochrane District) • May Lake (Mickle Creek, Kenora District) • May Lake (Nipissing District) • May Lake (Sables-Spanish Rivers) • May Lake (Gallagher Township, Sudbury District) • May Lake (Elliot Lake) • Mayer Lake • Mayfair Pond • Mayfield Lake • Mayflower Lake • Mayhew Lake (Rainy River District) • Mayhew Lake (Renfrew County) • Maynard Lake • Mayo Lake • Maytham Lake • Mazinaw Lake • Mazur Lake ==McA–McB==

• McAdam Lake • McAlpine Lake (Rainy River District) • McAlpine Lake (Lindbergh Lake, Cochrane District) • McAlpine Lake (McAlpine Township, Cochrane District) • McAra Lake • McAree Lake • McArthur Lake • McAuley Lake (Thunder Bay District) • McAuley Lake (Sudbury District) • McAvany Lake • McAvay Lake • McBain Lake (Sudbury District) • McBain Lake (Kenora District) • McBean Lake • McBride Lake • McBrien Pond ==McCa–McCl==

• McCabe Lake • McCabes Lake • McCaffery Lake • McCallum Lake (Sudbury District) • McCallum Lake (Hastings County) • McCallum's Pond • McCambly Lake • McCan Lake • McCann Lake (Thunder Bay District) • McCann Lake (Haliburton County) • McCarrel Lake • McCarrolls Lake • McCarron Lake • McCarston's Lake • McCarthy Lake (Algoma District) • McCarthy Lake (Nipissing District) • McCarthy Lake (Perth County) • McCartney Lake • McCaslim Lake • McCastle Pond • McCaulay Lake (Rainy River District) • McCauley Lake (Nipissing District) • McCauley Lake (Parry Sound District) • McCauley Lake (Kenora District) • McCausland Lake (Frontenac County) • McCausland Lake (Thunder Bay District) • McCaw Lake • McCharles Lake (Renfrew County) • McCharles Lake (Sudbury District) • McChesney Lake • McCleary Lake • McClung Lake • McClures Lake • McCluskey Lake • McCluskie Lake ==McCo–McCu==