| Macauley | ONTARIO (North/Nord) | ONTARIO |
| Macdonald | ALGOMA | ONTARIO |
| Macdonald | SELKIRK | MANITOBA |
| Machar | MUSKOKA & PARRY SOUND | ONTARIO |
| Mackenzie | UNORGANIZED TERRITORIES/TERRITOI | THE TERRITORIES |
| Maclean | ONTARIO (North/Nord) | ONTARIO |
| Macleod | ALBERTA | THE TERRITORIES |
| Macpherson & Kirkpatrick | NIPISSING | ONTARIO |
| Madawaska (Lower/Bas) | VICTORIA | NEW BRUNSWICK |
| Madawaska (Upper/Haut) | VICTORIA | NEW BRUNSWICK |
| Mader Cove | LUNENBURG | NOVA SCOTIA |
| Madoc | HASTINGS (North/Nord) | ONTARIO |
| Madoc (Village) | HASTINGS (North/Nord) | ONTARIO |
| Magog | STANSTEAD | QUEBEC |
| Magog (Town) | STANSTEAD | QUEBEC |
| Magrath | ALBERTA | THE TERRITORIES |
| Mahone Bay | LUNENBURG | NOVA SCOTIA |
| Mahone Bay Road | LUNENBURG | NOVA SCOTIA |
| Maidstone | ESSEX (North/Nord) | ONTARIO |
| Main-a-Dieu | CAPE BRETON | NOVA SCOTIA |
| Maisonneuve (Town/Ville) | MAISONNEUVE | QUEBEC |
| Maitland | ANNAPOLIS | NOVA SCOTIA |
| Maitland | HANTS | NOVA SCOTIA |
| Malahide | ELGIN (East/Est) | ONTARIO |
| Malbaie | CHARLEVOIX | QUEBEC |
| Malbaie | GASPÉ | QUEBEC |
| Malbaie (Village) | CHARLEVOIX | QUEBEC |
| Malden | ESSEX (South/Sud) | ONTARIO |
| Manchester | GUYSBOROUGH | NOVA SCOTIA |
| Manicouagan | CHICOUTIMI & SAGUENAY | QUEBEC |
| Manitou | ALGOMA | ONTARIO |
| Manitou (Village) | LISGAR | MANITOBA |
| Maniwaki | WRIGHT | QUEBEC |
| Mann & Restigouche (Indian reserve/Reserve indienne) no. 1 | BONAVENTURE | QUEBEC |
| Manners Sutton | YORK | NEW BRUNSWICK |
| Mansfield & Pontefract | PONTIAC | QUEBEC |
| Manvers | DURHAM (East/Est) | ONTARIO |
| Maple Creek | ASSINIBOIA (West/Ouest) | THE TERRITORIES |
| maple grove | YORK | NEW BRUNSWICK |
| Mara | ONTARIO (North/Nord) | ONTARIO |
| Marbleton (Village) | RICHMOND & WOLFE | QUEBEC |
| March | CARLETON | ONTARIO |
| Marchand | LABELLE | QUEBEC |
| Margaree Harbour (East/Est) | INVERNESS | NOVA SCOTIA |
| Margaree (Northeast/Nord Est) | INVERNESS | NOVA SCOTIA |
| Margaree (Southeast/Sud Est) | INVERNESS | NOVA SCOTIA |
| Margaree (Southwest/Sud Ouest) | INVERNESS | NOVA SCOTIA |
| Margaree Harbour (West/Ouest) | INVERNESS | NOVA SCOTIA |
| Margaretville | ANNAPOLIS | NOVA SCOTIA |
| Maria | BONAVENTURE | QUEBEC |
| Marie Joseph | GUYSBOROUGH | NOVA SCOTIA |
| Marieville (Village) | ROUVILLE | QUEBEC |
| Mariposa | VICTORIA (South/Sud) | ONTARIO |
| Markdale (Village) | GREY (South/Sud) | ONTARIO |
| Markham | YORK (East/Est) | ONTARIO |
| Markham (Village) | YORK (East/Est) | ONTARIO |
| Marlborough | ASSINIBOIA (West/Ouest) | THE TERRITORIES |
| Marlborough | CARLETON | ONTARIO |
| Marmora & Lake | HASTINGS (North/Nord) | ONTARIO |
| Marsden & Piopolis (Village) | COMPTON | QUEBEC |
| Marshall (Town/Ville) | DIGBY | NOVA SCOTIA |
| Martland | NIPISSING | ONTARIO |
| Maryborough | WELLINGTON (Centre) | ONTARIO |
| Maryfield | ASSINIBOIA (East/Est) | THE TERRITORIES |
| Marysburg (North/Nord) | PRINCE EDWARD | ONTARIO |
| Marysburg (South/Sud) | PRINCE EDWARD | ONTARIO |
| Marysville (Town/Ville) | YORK | NEW BRUNSWICK |
| Maryvale | ANTIGONISH | NOVA SCOTIA |
| Masham | WRIGHT | QUEBEC |
| Masson (Village) | LABELLE | QUEBEC |
| Mastigouche | MASKINONGÉ | QUEBEC |
| Matapedia | BONAVENTURE | QUEBEC |
| Matchedash | SIMCOE (East/Est) | ONTARIO |
| Matilda | DUNDAS | ONTARIO |
| Mattawan | NIPISSING | ONTARIO |
| Mattawan (Town/Ville) | NIPISSING | ONTARIO |
| Maugerville | SUNBURY & QUEENS | NEW BRUNSWICK |
| Maxville (Village) | GLENGARRY | ONTARIO |
| May, Salter & (Township/Canton) 116 | NIPISSING | ONTARIO |
| Mayo | HASTINGS (North/Nord) | ONTARIO |
| McAdam | YORK | NEW BRUNSWICK |
| McConkey, Mills, Wilson & Hardy | MUSKOKA & PARRY SOUND | ONTARIO |
| McDougall | MUSKOKA & PARRY SOUND | ONTARIO |
| McGillivray | MIDDLESEX (North/Nord) | ONTARIO |
| McIrvine | ALGOMA | ONTARIO |
| McKellar | MUSKOKA & PARRY SOUND | ONTARIO |
| McKenzie & Burton | MUSKOKA & PARRY SOUND | ONTARIO |
| McKillop | HURON (South/Sud) | ONTARIO |
| McKim | NIPISSING | ONTARIO |
| McLennan Mountain | PICTOU | NOVA SCOTIA |
| McMurrich | MUSKOKA & PARRY SOUND | ONTARIO |
| McNab | RENFREW (South/Sud) | ONTARIO |
| McNutt | ASSINIBOIA (East/Est) | THE TERRITORIES |
| McQuesten, Stewart (Yukon) | UNORGANIZED TERRITORIES/TERRITOI | THE TERRITORIES |
| Meadow Lake | SASKATCHEWAN | THE TERRITORIES |
| Meadowvale | ANNAPOLIS | NOVA SCOTIA |
| Meaford (Town/Ville) | GREY (East/Est) | ONTARIO |
| Meagher Grant | HALIFAX | NOVA SCOTIA |
| Mécatina | CHICOUTIMI & SAGUENAY | QUEBEC |
| Medicine Hat (North/Nord) | ASSINIBOIA (West/Ouest) | THE TERRITORIES |
| Medicine Hat (North-west/Nord-ouest) | ASSINIBOIA (West/Ouest) | THE TERRITORIES |
| Medicine Hat (South/Sud) | ASSINIBOIA (West/Ouest) | THE TERRITORIES |
| Medonte | SIMCOE (East/Est) | ONTARIO |
| Medora & Wood | SIMCOE (East/Est) | ONTARIO |
| Melancthon | GREY (East/Est) | ONTARIO |
| Melbourne & Brompton Cove | RICHMOND & WOLFE | QUEBEC |
| Melbourne & Brompton Gore | RICHMOND & WOLFE | QUEBEC |
| Melbourne (Village) | RICHMOND & WOLFE | QUEBEC |
| Meldrum Bay | ALGOMA | ONTARIO |
| Melvern | ANNAPOLIS | NOVA SCOTIA |
| Meota | SASKATCHEWAN | THE TERRITORIES |
| Merigomish | PICTOU | NOVA SCOTIA |
| Merrickville (Village) | LEEDS & GRENVILLE (North/Nord) | ONTARIO |
| Merritton | LINCOLN & NIAGARA | ONTARIO |
| Mersea | ESSEX (South/Sud) | ONTARIO |
| Metcalfe | MIDDLESEX (West/Ouest) | ONTARIO |
| Metchosin | VICTORIA | BRITISH COLUMBIA |
| Meteghan | DIGBY | NOVA SCOTIA |
| Meteghan River | DIGBY | NOVA SCOTIA |
| Methuen | PETERBOROUGH (East/Est) | ONTARIO |
| Michipicoten Harbour | ALGOMA | ONTARIO |
| Michipicoten River | ALGOMA | ONTARIO |
| Middle Londonderry | Colchester | NOVA SCOTIA |
| Middle Musquodoboit | HALIFAX | NOVA SCOTIA |
| Middle Stewiacke | COLCHESTER | NOVA SCOTIA |
| Middle Dominion (Yukon) | UNORGANIZED TERRITORIES/TERRITOI | THE TERRITORIES |
| Middle Hunker (Yukon) | UNORGANIZED TERRITORIES/TERRITOI | THE TERRITORIES |
| Middle River | PICTOU | NOVA SCOTIA |
| Middle River | VICTORIA | NOVA SCOTIA |
| Middleton | ANNAPOLIS | NOVA SCOTIA |
| Middleton | NORFOLK (North/Nord) | ONTARIO |
| Midland (Town/Ville) | SIMCOE (East/Est) | ONTARIO |
| Midville Branch | LUNENBURG | NOVA SCOTIA |
| Mikado Mine | ALGOMA | ONTARIO |
| Milestone | ASSINIBOIA (West/Ouest) | THE TERRITORIES |
| Milford | ANNAPOLIS | NOVA SCOTIA |
| Milford | GUYSBOROUGH | NOVA SCOTIA |
| Mill Village | SHELBURNE & QUEENS | NOVA SCOTIA |
| Mill Brook | PICTOU | NOVA SCOTIA |
| Mill Cove | LUNENBURG | NOVA SCOTIA |
| Millarville | ALBERTA | THE TERRITORIES |
| Millbrook (Village) | DURHAM (East/Est) | ONTARIO |
| Mille Isles | ARGENTEUIL | QUEBEC |
| Miller Creek (Yukon) | UNORGANIZED TERRITORIES/TERRITOI | THE TERRITORIES |
| Millet | ALBERTA | THE TERRITORIES |
| Mills | ALGOMA | ONTARIO |
| Milltown (Town/Ville) | CHARLOTTE | NEW BRUNSWICK |
| Millville | KINGS | NOVA SCOTIA |
| Milton | SHELBURNE & QUEENS | NOVA SCOTIA |
| Milton (Town/Ville) | HALTON | ONTARIO |
| Milverton (Village) | PERTH (North/Nord) | ONTARIO |
| Minden | VICTORIA (North/Nord) | ONTARIO |
| Miniota | MARQUETTE | MANITOBA |
| Minitonas | MARQUETTE | MANITOBA |
| Minnedosa (Town/Ville) | MARQUETTE | MANITOBA |
| Minto | WELLINGTON (North/Nord) | ONTARIO |
| Missinaibi | ALGOMA | ONTARIO |
| Mistawasis | SASKATCHEWAN | THE TERRITORIES |
| Mitchell (Town/Ville) | PERTH (South/Sud) | ONTARIO |
| Moffatt | ASSINIBOIA (East/Est) | THE TERRITORIES |
| Moisie | CHICOUTIMI & SAGUENAY | QUEBEC |
| Monaghan (North/Nord) | PETERBOROUGH (West/Ouest) | ONTARIO |
| Monaghan (South/Sud) | PETERBOROUGH (West/Ouest) | ONTARIO |
| Monck | SIMCOE (East/Est) | ONTARIO |
| Moncton | WESTMORLAND | NEW BRUNSWICK |
| Moncton (City/Cite) | WESTMORLAND | NEW BRUNSWICK |
| Monmouth | PETERBOROUGH (East/Est) | ONTARIO |
| Mono | CARDWELL | ONTARIO |
| Mont Joli (Village) | RIMOUSKI | QUEBEC |
| Mont Louis & Rivière Magdeleine | GASPÉ | QUEBEC |
| Mont-Carmel | KAMOURASKA | QUEBEC |
| Montague | LANARK (South/Sud) | ONTARIO |
| Montcalm | PROVENCHER | MANITOBA |
| Monteagle & Hershel | HASTINGS (North/Nord) | ONTARIO |
| Montebello (Village) | LABELLE | QUEBEC |
| Monteith | MUSKOKA & PARRY SOUND | ONTARIO |
| Montgomery | ASSINIBOIA (East/Est) | THE TERRITORIES |
| Montigny & Kiamika | LABELLE | QUEBEC |
| Montmagny (Town/Ville) | MONTMAGNY | QUEBEC |
| Montmagny (Town/Ville) | MONTMAGNY | QUEBEC |
| Montmartre | ASSINIBOIA (East/Est) | THE TERRITORIES |
| Montminy, Rolette & Panet | MONTMAGNY | QUEBEC |
| Montréal (City/Cité) Saint-Gabriel (Ward/Quartier) | HOCHELAGA | QUEBEC |
| Montréal (City/Cité) (East Ward/Quartier Est) | MONTRÉAL (City/Cité)/176 | QUEBEC |
| Montréal (City/Cité) Hochelaga (Ward/Quartier) | MAISONNEUVE | QUEBEC |
| Montréal (City/Cité) Saint-Denis (Ward/Quartier) | MAISONNEUVE | QUEBEC |
| Montréal (City/Cité) Saint-Gabriel (Ward/Quartier) | HOCHELAGA | QUEBEC |
| Montréal (City/Cité) Saint-Jacques (Ward/Quartier) | MONTRÉAL (City/Cité)/176 | QUEBEC |
| Montréal (City/Cité) Saint-Jean-Baptiste (Ward/Quartier) | MAISONNEUVE | QUEBEC |
| Montréal (City/ville) Hochelaga (Ward/Quartier) | MAISONNEUVE | QUEBEC |
| Montréal (West/Ouest) (Town/Ville) | JACQUES-CARTIER | QUEBEC |
| Montreal Lake | SASKATCHEWAN | THE TERRITORIES |
| Montreal River & Temagami Lake | NIPISSING | ONTARIO |
| Moore | LAMBTON (West/Ouest) | ONTARIO |
| Moose Jaw (North-east/Nord-est) | ASSINIBOIA (West/Ouest) | THE TERRITORIES |
| Moose Jaw (South/Sud) | ASSINIBOIA (West/Ouest) | THE TERRITORIES |
| Moose Jaw (West/Ouest) | ASSINIBOIA (West/Ouest) | THE TERRITORIES |
| Moose Lake | SASKATCHEWAN | THE TERRITORIES |
| Moosomin (North/Nord) | ASSINIBOIA (East/Est) | THE TERRITORIES |
| Moosomin (South/Sud) | ASSINIBOIA (East/Est) | THE TERRITORIES |
| Morin | ARGENTEUIL | QUEBEC |
| Morinville | ALBERTA | THE TERRITORIES |
| Morley | ALBERTA | THE TERRITORIES |
| Morley | ALGOMA | ONTARIO |
| Mornington | PERTH (North/Nord) | ONTARIO |
| Morris | HURON (East/Est) | ONTARIO |
| Morris | PROVENCHER | MANITOBA |
| Morris (Town/Ville) | PROVENCHER | MANITOBA |
| Morrisburg (Village) | DUNDAS | ONTARIO |
| Morrison | ONTARIO (North/Nord) | ONTARIO |
| Morristown | ANTIGONISH | NOVA SCOTIA |
| Morton | BRANDON | MANITOBA |
| Mosa | MIDDLESEX (West/Ouest) | ONTARIO |
| Mossy Portage | SASKATCHEWAN | THE TERRITORIES |
| Moulton | HALDIMAND & MONCK | ONTARIO |
| Mount Forest (Town/Ville) | WELLINGTON (North/Nord) | ONTARIO |
| Mount Thom | PICTOU | NOVA SCOTIA |
| Mountain | DUNDAS | ONTARIO |
| Mountain Mill | ALBERTA | THE TERRITORIES |
| Mountain View | ALBERTA | THE TERRITORIES |
| Mowat & Blair | MUSKOKA & PARRY SOUND | ONTARIO |
| Mulgrave | GUYSBOROUGH | NOVA SCOTIA |
| Mulgrave & Derry | LABELLE | QUEBEC |
| Mulmur | SIMCOE (South/Sud) | ONTARIO |
| Murchison, Preston & Lyell | NIPISSING | ONTARIO |
| Murray | NORTHUMBERLAND (East/Est) | ONTARIO |
| Muskeg Lake | SASKATCHEWAN | THE TERRITORIES |
| Muskoka | SIMCOE (East/Est) | ONTARIO |
| Musquash | SAINT JOHN | NEW BRUNSWICK |
| Musquodoboit Harbour | HALIFAX | NOVA SCOTIA |