Cities
- Aberfoyle ON
- Abingdon ON
- Achill ON
- Acme AB
- Actinolite ON
- Acton ON
- Adamsville ON
- Addington Highlands ON
- Adelaide ON
- Adjala-Tosorontio ON
- Adolphustown ON
- Ahmic Lake ON
- Ailsa Craig ON
- Airdrie AB
- Airlie ON
- Airy ON
- Ajax ON
- Ajax-Pickering ON
- Alban ON
- Albert Canyon BC
- Albert Mines NB
- Albert ON
- Albury ON
- Alcona Beach ON
- Alcona ON
- Alderdale ON
- Alderslea ON
- Aldersyde AB
- Alderville ON
- Aldred s Beach ON
- Alexandria Point ON
- Algonquin Highlands ON
- Algonquin Park ON
- Alice ON
- Allan Mills ON
- Allan ON
- Allan Park ON
- Allan Water ON
- Allanburg ON
- Allenford ON
- Allensville ON
- Allenwood Beach ON
- Allenwood ON
- Allimill ON
- Allisonville ON
- Alliston ON
- Allsaw ON
- Alma NB
- Alma ON
- Alma Parish NB
- Alnwick-Haldimand ON
- Alpen AB
- Alpen Siding AB
- Alpine Village ON
- Alport ON
- Alsace ON
- Alsfeldt ON
- Alsops Beach ON
- Alvanley ON
- Alvinston Independent ON
- Alvinston ON
- Amaranth ON
- Amber Valley AB
- Amberley ON
- Ambleside ON
- Ameliasburg ON
- Ameliasburgh ON
- Amesbury AB
- Amherst Island ON
- Amigo Beach ON
- Amisk AB
- Ammon NB
- Amulree ON
- Amyot ON
- Ancaster ON
- Anchor Point NL
- Anchorage Bay ON
- Ancona Point ON
- Anderson Settlement NB
- Andover NB
- Anglemont BC
- Angus ON
- Annagance NB
- Annan ON
- Anniedale BC
- Ansnorveldt ON
- Anson ON
- Anstruther Lake ON
- Anten Mills ON
- Antioch ON
- Antrim NS
- Apex NU
- Appin ON
- Applewood Heights ON
- Apsley ON
- Apto ON
- Ardbeg ON
- Arden ON
- Ardmore AB
- Ardmore Beach ON
- Ardoch ON
- Ardtrea ON
- Ariss ON
- Arkell ON
- Arkona ON
- Arkwood ON
- Arkwright ON
- Arlington ON
- Armour ON
- Armow ON
- Armstrong Mills ON
- Armstrong s Point ON
- Arnott ON
- Arnstein ON
- Aroland ON
- Arpin ON
- Arran-Elderslie ON
- Arranvale ON
- Arras AB
- Arthur ON
- Arva ON
- Ash ON
- Ashburn ON
- Ashby Mill ON
- Ashdad ON
- Ashfield-Colborne-Wawanosh ON
- Ashgrove ON
- Ashmont AB
- Ashton ON
- Ashworth ON
- Aspdin ON
- Asphodel ON
- Assumption ON
- Astorville ON
- Atha Road ON
- Athalmer BC
- Atherley ON
- Atherton ON
- Athlone ON
- Atikameg AB
- Atikup ON
- Atmore AB
- Attercliffe ON
- Attercliffe Station ON
- Atwood ON
- Auburn ON
- Auden ON
- Aurora ON
- Avening ON
- Avenir AB
- Avery Point ON
- Avon ON
- Avonbank ON
- Avonton ON
- Axe Lake ON
- Aylmer O ON
- Aylmer West ON
- Ayton ON