Cities
- Aberfoyle ON
- Abingdon ON
- Acheson AB
- Achill ON
- Acton ON
- Adjala-Tosorontio ON
- Advocate Harbour NS
- Ailsa Craig ON
- Airdrie AB
- Airlie ON
- Ajax ON
- Ajax-Pickering ON
- Albert Head BC
- Albuna ON
- Alcomdale AB
- Alcona Beach ON
- Alcona ON
- Alderslea ON
- Aldersyde AB
- Aldred s Beach ON
- Algonquin Park ON
- Allan Water ON
- Allenwood Beach ON
- Allenwood ON
- Allimill ON
- Alma ON
- Almonte ON
- Alvinston Independent ON
- Amaranth MB
- Ambassador Beach ON
- Amherst Pointe ON
- Amherstburg ON
- Amisk AB
- Amulree ON
- Ancaster ON
- Anderdon ON
- Andrewsville ON
- Anniedale BC
- Anola MB
- Ansnorveldt ON
- Anten Mills ON
- Antrim NS
- Antrim ON
- Appin ON
- Appleton ON
- Applewood Heights ON
- Apto ON
- Arbeatha Park ON
- Argyle MB
- Ariss ON
- Arkell ON
- Arkona ON
- Arlington ON
- Arlington Woods ON
- Armena AB
- Armstrong Mills ON
- Arner ON
- Arpin ON
- Arva ON
- Ash ON
- Ashdale ON
- Ashgrove ON
- Ashton ON
- Ashton Station ON
- Aspotogan NS
- Atchelitz BC
- Atha Road ON
- Athlone ON
- Atikup ON
- Attercliffe ON
- Attercliffe Station ON
- Aubigny MB
- Aurora ON
- Austin Heights BC
- Avening ON
- Avon ON
- Avonbank ON
- Avonport NS
- Avonton ON
- Aylesford NS
- Aylmer O ON
- Aylmer West ON