| Abercrombie | PICTOU | NOVA SCOTIA |
| Aberdeen | ALGOMA | ONTARIO |
| Aberdeen | CARLETON | NEW BRUNSWICK |
| Aberdeen & Malakoff | PONTIAC | QUEBEC |
| Acadia Mines | COLCHESTER | NOVA SCOTIA |
| Acadieville | KENT | NEW BRUNSWICK |
| Acton (Village) | HALTON | ONTARIO |
| Acton (Town/Ville) | BAGOT | QUEBEC |
| Addington | RESTIGOUCHE | NEW BRUNSWICK |
| Adelaide | MIDDLESEX (West/Ouest) | ONTARIO |
| Adjala | CARDWELL | ONTARIO |
| Admaston | RENFREW (South/Sud) | ONTARIO |
| Adolphustown | LENNOX | ONTARIO |
| Adstock | BEAUCE | QUEBEC |
| Aetna | ALBERTA | THE TERRITORIES |
| Agnes (Village) | BEAUCE | QUEBEC |
| Ahuntsic (Village) | LAVAL | QUEBEC |
| Ailsa Craig (Village) | MIDDLESEX (North/Nord) | ONTARIO |
| Aird Island | NIPISSING | ONTARIO |
| Airdrie | ALBERTA | THE TERRITORIES |
| Airey, Sabine & Lyell | NIPISSING | ONTARIO |
| Alameda | ASSINIBOIA (East/Est) | THE TERRITORIES |
| Albanel | CHICOUTIMI & SAGUENAY | QUEBEC |
| Albemarle | BRUCE (North/Nord) | ONTARIO |
| Alberni | VANCOUVER | BRITISH COLUMBIA |
| Albert | CHICOUTIMI & SAGUENAY | QUEBEC |
| Alberton | ALGOMA | ONTARIO |
| Albion | CARDWELL | ONTARIO |
| Albion Mines | PICTOU | NOVA SCOTIA |
| Aldborough | ELGIN (West/Ouest) | ONTARIO |
| Aldfield | PONTIAC | QUEBEC |
| Alexandria (Village) | GLENGARRY | ONTARIO |
| Alfred | PRESCOTT | ONTARIO |
| Algoma Mills | NIPISSING | ONTARIO |
| Algona (South/Sud) | RENFREW (North/Nord) | ONTARIO |
| Alice & Fraser | RENFREW (North/Nord) | ONTARIO |
| Allandale | SIMCOE (South/Sud) | ONTARIO |
| Alleyn and Cawood | Pontiac | QUEBEC |
| Alliston (Town/Ville) | SIMCOE (South/Sud) | ONTARIO |
| Allumette Island | PONTIAC | QUEBEC |
| Alma | ALBERT | NEW BRUNSWICK |
| Alma | ASSINIBOIA (East/Est) | THE TERRITORIES |
| Almonte (Town/Ville) | LANARK (North/Nord) | ONTARIO |
| Alnwick | NORTHUMBERLAND | NEW BRUNSWICK |
| Alnwick | NORTHUMBERLAND (West/Ouest) | ONTARIO |
| Alpaugh | ALBERTA | THE TERRITORIES |
| Alright Islands | GASPÉ | QUEBEC |
| Alvinston (Village) | LAMBTON (East/Est) | ONTARIO |
| Alvinston (Village) | LAMBTON (East/Est) | ONTARIO |
| Amabel | BRUCE (North/Nord) | ONTARIO |
| Amabel (Allenford) | BRUCE (North/Nord) | ONTARIO |
| Amabel (Hepworth) | BRUCE (North/Nord) | ONTARIO |
| Amabel (Saugeen Indian Reserve) | BRUCE (North/Nord) | ONTARIO |
| Amaranth | WELLINGTON (North/Nord) | ONTARIO |
| Ameliasburg | PRINCE EDWARD | ONTARIO |
| Amherst | LABELLE | QUEBEC |
| Amherst Island | LENNOX | ONTARIO |
| Amherst (Town/Ville) | CUMBERLAND | NOVA SCOTIA |
| Amherstburg (Town/Ville) | ESSEX (South/Sud) | ONTARIO |
| Ancaster | WENTWORTH & BRANT (North/Nord) | ONTARIO |
| Ancaster (Village) | WENTWORTH & BRANT (North/Nord) | ONTARIO |
| Ancienne Lorette | QUÉBEC (County/Comté) | QUEBEC |
| Anderdon | ESSEX (South/Sud) | ONTARIO |
| Andover | VICTORIA | NEW BRUNSWICK |
| Annapolis Royal | ANNAPOLIS | NOVA SCOTIA |
| Annaville (Village) | NICOLET | QUEBEC |
| Anson & Hindon | VICTORIA (North/Nord) | ONTARIO |
| Anthracite | ALBERTA | THE TERRITORIES |
| Antigonish | ANTIGONISH | NOVA SCOTIA |
| Antigonish South | ANTIGONISH | NOVA SCOTIA |
| Arat | ASSINIBOIA (West/Ouest) | THE TERRITORIES |
| Arcadia | YARMOUTH | NOVA SCOTIA |
| Archie | MARQUETTE | MANITOBA |
| Argyle | LISGAR | MANITOBA |
| Argyle Head | Yarmouth | NOVA SCOTIA |
| Arichat | RICHMOND | NOVA SCOTIA |
| Arichat (West/Ouest) | RICHMOND | NOVA SCOTIA |
| Arisaig | ANTIGONISH | NOVA SCOTIA |
| Arkona (Village) | LAMBTON (East/Est) | ONTARIO |
| Armour | MUSKOKA & PARRY SOUND | ONTARIO |
| Arnprior (Town/Ville) | RENFREW (South/Sud) | ONTARIO |
| Arran | BRUCE (North/Nord) | ONTARIO |
| Artemesia | GREY (South/Sud) | ONTARIO |
| Arthabaskaville (Village) | DRUMMOND & ARTHABASKA | QUEBEC |
| Arthur | BRANDON | MANITOBA |
| Arthur | WELLINGTON (North/Nord) | ONTARIO |
| Arthur (Village) | WELLINGTON (North/Nord) | ONTARIO |
| Arundel | ARGENTEUIL | QUEBEC |
| Asbestos (Village) | RICHMOND & WOLFE | QUEBEC |
| Ascot | SHERBROOKE | QUEBEC |
| Ash Rapids | ALGOMA | ONTARIO |
| Ashburnham (Village) | PETERBOROUGH (East/Est) | ONTARIO |
| Ashfield | HURON (West/Ouest) | ONTARIO |
| Asphodel | PETERBOROUGH (East/Est) | ONTARIO |
| Assiginack | ALGOMA | ONTARIO |
| Assiniboia | SELKIRK | MANITOBA |
| Athabaska | UNORGANIZED TERRITORIES/TERRITOI | THE TERRITORIES |
| Athabaska Landing | ALBERTA | THE TERRITORIES |
| Athens (Village) | LEEDS (South/Sud) | ONTARIO |
| Athol | PRINCE EDWARD | ONTARIO |
| Auckland | COMPTON | QUEBEC |
| Augusta | GRENVILLE (South/Sud) | ONTARIO |
| Aumond | WRIGHT | QUEBEC |
| Aurora (Town/Ville) | YORK (North/Nord) | ONTARIO |
| Avondale | HANTS | NOVA SCOTIA |
| Avonport | KINGS | NOVA SCOTIA |
| Aylesworth | ALGOMA | ONTARIO |
| Aylmer (Town/Ville) | WRIGHT | QUEBEC |
| Aylmer (Town/Ville) | ELGIN (East/Est) | ONTARIO |
| Aylmer (Town/Ville) | WRIGHT | QUEBEC |
| Aylwin | WRIGHT | QUEBEC |
| Ayr (Village) | WATERLOO (South/Sud) | ONTARIO |