Cities
- Abercorn QC
- Aberfoyle ON
- Abingdon ON
- Achill ON
- Actinolite ON
- Acton ON
- Acton Vale QC
- Actons Corners ON
- Adamsville ON
- Adamsville QC
- Addington Highlands ON
- Adelaide ON
- Adjala-Tosorontio ON
- Adolphustown ON
- Ahmic Harbour ON
- Ahmic Lake ON
- Ailsa Craig ON
- Airlie ON
- Airy ON
- Ajax ON
- Ajax-Pickering ON
- Akwesasne QC
- Alban ON
- Albert ON
- Albury ON
- Alcona Beach ON
- Alcona ON
- Alderdale ON
- Alderslea ON
- Alderville ON
- Aldred s Beach ON
- Alexandria ON
- Alexandria Point ON
- Alfred And Plantagenet ON
- Alfred ON
- Algonquin Highlands ON
- Algonquin 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
- Alleyn-et-Cawood QC
- Allimill ON
- Allisonville ON
- Alliston ON
- Allsaw ON
- Alma ON
- Almonte ON
- Alnwick-Haldimand ON
- Alpine Village ON
- Alport ON
- Alsace ON
- Alsfeldt ON
- Alsops Beach ON
- Alvanley ON
- Alvinston Independent ON
- Alvinston ON
- Amaranth ON
- Amberley ON
- Ambleside ON
- Ameliasburg ON
- Ameliasburgh ON
- Amherst Island ON
- Amherst QC
- Amigo Beach ON
- Amisk AB
- Amulree ON
- Amyot ON
- Ancaster ON
- Anchor Point NL
- Anchorage Bay ON
- Ancona Point ON
- Andover NB
- Andrewsville ON
- Ange-Gardien Monteregie QC
- Angus ON
- Annable Settlement ON
- Annan ON
- Annapolis Royal NS
- Anoma Lea ON
- Ansnorveldt ON
- Anson ON
- Anstruther Lake ON
- Anten Mills ON
- Antioch ON
- Antrim ON
- Apex NU
- Appin ON
- Apple Hill ON
- Applewood Heights ON
- Apsley ON
- Apto ON
- Arbeatha Park ON
- Archer ON
- Ardbeg ON
- Arden ON
- Ardmore Beach ON
- Ardoch ON
- Ardtrea ON
- Ariss ON
- Arkell ON
- Arkona ON
- Arkwood ON
- Arkwright ON
- Arlington ON
- Arlington Woods 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
- Arthur ON
- Arundel QC
- Arva ON
- Ash ON
- Ashburn ON
- Ashby Mill ON
- Ashdad ON
- Ashdale ON
- Ashfield-Colborne-Wawanosh ON
- Ashgrove ON
- Ashton ON
- Ashton Station ON
- Ashworth ON
- Aspdin ON
- Asphodel ON
- Assumption ON
- Astorville ON
- Atha Road ON
- Athelstan QC
- Atherley ON
- Atherton ON
- Athlone ON
- Atikup ON
- Attercliffe ON
- Attercliffe Station ON
- Atwood ON
- Aubert-Gallion QC
- Auburn ON
- Auden ON
- Aurora ON
- Avening ON
- Avery Point ON
- Avon ON
- Avonbank ON
- Avondale ON
- Avonmore ON
- Avonton ON
- Axe Lake ON
- Ayer s Cliff QC
- Aylmer O ON
- Aylmer West ON
- Ayton ON