Aberarder, Ontario
St. John's Presbyterian Church

Acton, Ontario
Knox Presbyterian Church

Ailsa Craig, Ontario
Ailsa Craig Presbyterian Church

Alberton, Ontario
Alberton Presbyterian Church

Alberton, Prince Edward Island
Alberton Presbyterian Church

Aldershot, Ontario
Aldershot Presbyterian Church
(See Burlington, Ontario: Aldershot Presbyterian Church)

Alice, Ontario
Alice Presbyterian Church
(See Pembroke, Ontario: First Presbyterian Church)

Alma, Ontario
St. Andrew's Presbyterian Church

Almonte, Ontario
Almonte Presbyterian Church

Alvinston, Ontario
Guthrie Presbyterian Church

Amherstburg, Ontario
St. Andrew's Presbyterian Church

Amherstview, Ontario
Trinity Presbyterian Church

Ancaster, Ontario
St. Andrew's Presbyterian Church

Angus, Ontario
Zion Presbyterian Church

Appin, Ontario
Appin Presbyterian Church

Arnprior, Ontario
St. Andrew's Presbyterian Church

Arthur, Ontario
St. Andrew's Presbyterian Church

Ashburn, Ontario
Burn's Presbyterian Church

Ashfield, Ontario
Ashfield Presbyterian Church

Athelstan, Quebec
Athelstan Presbyterian Church
Elgin Presbyterian Church
(See Athelstan, Quebec: Athelstan Presbyterian Church)

Atikokan, Ontario
St. Andrew's Presbyterian Church

Atwood, Ontario
Atwood Presbyterian Church

Auburn, Ontario
Knox Presbyterian Church
(See Goderich, Ontario: Knox Presbyterian Church)

Aurora, Ontario
St. Andrew's Presbyterian Church

Avonmore, Ontario
St. Andrew's Presbyterian Church

Avonton, Ontario
Avonton Presbyterian Church

Ayr, Ontario
Ayr Presbyterian Church

Ayton, Ontario
Knox Presbyterian Church